纸张类承印物进行印刷时,压印滚筒表面橡胶的肖式硬度通常为()。 A.78~80 B. 发布时间:2018-11-02 19:29 │ 来源:www.tikuol.com 题型:单项选择题 问题: 纸张类承印物进行印刷时,压印滚筒表面橡胶的肖式硬度通常为()。A.78~80B.75~80C.80~90D.90~100
题型:单项选择题 — I'm sorry I didn't attend your birthday party because my mother was ill. — ________. Is your mother better now? [ ]A. Forget it B. Go ahead C. Come on D. Take your time 查看答案
题型:单项选择题 病人因外伤造成左上中切牙横折露髓,经根管治疗后,欲行桩冠修复从力学角度考虑,冠桩的直径应为多少A.1.2~2.5mmB.1.1~1.5mmC.根径的1/3D.根径的1/2E.根径的1/4 查看答案