Skills contest lithographer knowledge assessment-multiple choice questions
The "Lithographic Platemaker" theoretical knowledge assessment questions are aimed at the finalists of the plate-platemaker student group and the employee group. In the current edition of the lithographic platemaking group, the theoretical part of the examination questions will be selected from the published question bank by the contest supervisory review team as the theoretical part of the "lithographic platemaker" group final section.
The following are the topics of the single selection section:
2. Single-choice questions (250 questions)
1. The offset printing plate currently used in China has a processed metal base ().
A. Copper B. Zinc C. Iron D. Aluminum
2. Among the traditional four printing methods, () printing is not direct printing.
A. Lithography B. Letterpress C. Intaglio D. Silk screen
3. The image processed by the computer is obtained by digitizing the analog image, which is composed of a certain number of pixels (dots), and each pixel has ().
A. Coordinate value B. Coordinate value and brightness value C. Brightness value D. Gray value
4. Print education in the HSB color mode used by Photoshop, () is expressed by H = 240 °, S = 100%, B = 100%.
A. Red B. Green C. Blue D. Black
5. If the lithographic paper is coated paper or high-grade calendered white cardboard, the number of screen lines can be set between ().
A. 175 lines / inch ~ 300 lines / inch B. 120 lines / inch ~ 150 lines / inch
C. 80 lines / inch ~ 133 lines / inch D. 120 lines / cm ~ 150 lines / cm
6. In the four-color version, the color version whose dot angle is set at 90 degrees is ().
A. K version B. M version C. C version D. Y version
7. In traditional printing, the thinnest printing method of printed product ink layer is ().
A. Flexo printing B. Flat printing C. Gravure printing D. Screen printing
8. When using amplitude modulation dot printing, the more dot lines () Han Guanhua means, the more the image basic unit (), the finer the image's subtle expression.
A. high, large B. high, small C. low, large D. low, small
9. Through experiments, it was found that the moiré fringes produced when the angle difference of the dots are () degrees are the most delicate. The most beautiful.
A.75 B.45 C.30 D.15
10. The bright tone part of the printed matter generally uses () to present the color.
A. Dots are parallel B. Dots overlap C. Dots cross D. Dots combine
11. In the CIE1931 chromaticity diagram, the coordinate of isoenergetic white light is ().
Ax = y = z = 0.5 B. x = y = z = 0 C. x = y = z = 1 D. x = y = z = 0.3333
12. When printing PS plate, the commonly used light source is () light source.
A. CO2 laser B. ultraviolet C. white light D. argon ion laser
13. FM screening technology is achieved by changing the spatial distribution of dots ().
A. amplitude B. magnitude C. frequency D. depth
14. Lab color mode is composed of three channels, L stands for lightness Donnelly, a and b chroma channels, A. b channel value range is ().
A.-120 ～ 120 B.0 ～ 120 C.120 ～ 240 D.-128 ～ 12715. When calibrating the monitor, use () as the standard color temperature of the monitor.
A. 5000K B. 5500K C. 7500K D. 9500K
16. The higher the () of the scanner, the greater the amount of image information that can be collected and the greater the ability to resolve details.
A. Bit depth B. Optical resolution C. Signal-to-noise ratio D. Maximum resolution
17. The image scanned by the roller scanner and flat scanner () is quite different.
A. Bright tone B. Middle tone C. Dark tone D. None
18. The output resolution of the laser imagesetter or plate machine is 2400dpi, and the number of screen lines is 150lpi Agfa, then the gray level that the dot can express is ().
A.16 B.32 C.124 D.256
19. The color gamut of the CMYK color space is () RGB color space.
A. Greater than B. Equal to C. Less than D. Over
20. The transformation process from a large color space to a small color space should use () to reproduce the intention.
A. Saturation first B. Absolute chroma C. Relative chroma conversion D. Proportional compression
21. The laser imagesetter that can only use a single film is ().
A. Outer-drum imagesetter B. Flat-type imagesetter C. Inner-drum imagesetter D. Winch imagesetter
22. One reason for the high accuracy of the inner drum laser imagesetter is ().
A. Use full-color film B. The distance from the laser to the film is equal C. The image formatter has a large format D. Use the R laser
23. The tone consistency formed by the following dot shape is the best ().
A. Square dots B. Round dots C. Chain dots D. Artistic dot printing suitability 24. The most serious part of dot dot increase during printing is ().
A. 50% of outlets B. Middle tone C. 65% of outlets D. Corners of outlets
25. Decomposed by the red filter is ().
A. Yellow version B. Magenta version C. Cyan version D. Black version
26. When the printing color is decomposed, the information of the magenta version is obtained with () color filter.
A. Red B. Yellow C. Green D. Blue
27. The following colors do not constitute complementary colors ().
A. Magenta and Green B. Magenta and Yellow C. Cyan and Red D. Yellow and Blue
28. If the color bit depth of an image scanner is 10, the gray level that the scanner can express is () level.
A.8 B.224 C.28 D.210
29. The printing plate installation method of () type direct plate-making machine is similar to the printing plate installation method of lithographic printing machine.
A. Inner drum B. Platform C. Outer drum D. Rotating mirror
30. The imaging range of the drum in the inner drum laser imagesetter is ().
A.360 B.270 C.180 D.90
31. Typesetting when printing PS version, use () film printing.
A. Positive negative picture B. Reverse negative picture C. Positive positive picture D. Reverse positive picture
32. When the film is output, the laser imagesetter with the highest imaging accuracy is ().
A. Winch-type imagesetter B. Outer-drum imagesetter C. Flat-type imagesetter D. Inner-drum imagesetter
33. () Adopt the rotation of the cylinder and the lateral movement of the recording head to complete the recording exposure of the printing plate.
A. Inner drum plate-making machine B. Outer drum plate-making machine C. Winch plate-making machine D. Platform-type plate-making machine
34. () The direct plate-making machine uses the recording head to rotate and move laterally to complete the recording exposure of the printing plate.
A. Outer drum type B. Inner drum type C. Rotating mirror type D. Platform type
35. () The ink layer of the printed matter is the thickest.
A. Lithography B. Silk screen C. Gravure D. Letterpress
36. If you want to copy pictures of people with bright colors, choose () the printing process is more appropriate.
A. Long tone black version B. Middle tone black version C. Short tone black version D. GCR
37. The plate-making layer of the gravure printing cylinder currently used in China is processed metal ().
A. Aluminum B. Zinc C. Iron D. Copper
38. The most serious printing method for environmental pollution is () printing. Acquire A. Lithograph B. Hole C. Gravure D. Flexo
39. Among the following printing plates, the surface image is positive () printing plate.
A. Silk screen B. Lithographic offset printing C. Gravure D. Flexo
40. In inkjet printing in the subtractive color method of colorants, the following () color reduction rule is correct.
41. Digital proofing must be supported by () technology.
A. Offset proofing B. CTP plate making C. Color management D. CTF
42. Flexographic printing is a method of () printing.
A. Lithography B. Letterpress C. Gravure D. Silkscreen
43. () The highest printing durability.
A. Lithography B. Letterpress C. Gravure D. Silkscreen
44. Electrostatic digital printing does not require a printing plate, but transfers ink through ().
A. Light conductor B. Aluminum base C. Paper base D. Laser head
45. The basic imaging process of electrostatic digital printing is ().
A. Exposure → Charge → Development → Transfer → Fix → Clean. B. Transfer → Charge → Exposure → Development → Fixation → Cleanup. Post-press process C. Development → Charge → Exposure → Transfer → Fix → Cleanup. D. Charge → Exposure → Development → Transfer → Fix → Clean.
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