__ flat printing industry （__平板印刷工）.doc

__ flat printing industry (2)（__平板印刷工(2)） 151, no moire in printing dot is () (answer: B). A square dot, B FM dot, C dot, D point 152 which of the following colors belong to the primary color?. (answer: C) A crimson, B black, C magenta, D blue 153, in accordance with industry standards, flat printing of fine print registration error allowed. (answer: B) A = 0.01mm B = 0.10mm C = 0.20mm D = 0.30mm 154, blanket hardness and plate printing rate and dot transfer, usually air cushion blanket hardness about A (Shore). (answer: C) A 30~45, B 50~70, C 75~85, D 90~95 155, usually PS version of dampening solution, pH value of 5~6 between, electrical conductivity requirements (). (answer: B) A 600~800, B 800~1200, C 1100~1600, D 1600~2000 156, in the offset printing process for () the emulsification is not only inevitable, but also necessary. (answer: B) A B oil in water emulsion C water immiscible oil-water separation D 157, in the offset machine adjustment or maintenance, must be in () circumstances. (answer: C) A stop, B power off, C is in safe condition, D cut off gas source 158, the density of the quality of printed matter should be chosen (). (answer: B) A has just printed a density value of B. The density value of the ink after drying C, A+B, D does not matter 159. The ratio of the film thickness to the ink film thickness of the printing plate is about (). (answer: D) A, 2:1, B, 1:4, C, 3:1, D, 1:3 160, the surface tension of ink (surface tension of dampening solution). (answer: B) A is greater than B, less than C equals 161, offset press roller gear mostly use () pressure angle. (answer: C) A 20 degrees B, 17 degrees C, 15 degrees or 14.5 degrees 162. The zero point of the offset press is (). (answer: A) A gripper paper begins to pick up the point of transfer between the B paper transfer point and the impression roller, and the C transfer nozzle begins to release the paper D impression roller and receiving cylinder intersection point 163 、 domestic offset press mostly