6M32-160/320型氮氢压缩机,其中的160指的是()。
A、活塞杆直径
B、一段吸气量
C、活塞行程
D、转速
参考答案:B
治疗侵蚀性葡萄胎和绒癌最常用的化疗药物是()
A.甲氨蝶呤
B.5-氟尿嘧啶+放线菌素D
C.环磷酰胺
D.硝卡芥
E.放线菌素D
Questions 1~5
According to the author, his articles ______.
A. are seldom read by filmgoersB. are ignored by stars and film directorsC. have little effect on public viewing habitsD. have greater persuasion than people realize