一步制粒是集物料的（）等过程在同一设备内一次完成.
A、混合
B、制软材
C、制粒
D、干燥
参考答案：A, C, D
— Didn't your friends play computer games yesterday?
— _________. They watched TV yesterday. [ ]
A. Yes, they didn't
B. No, they did
C. No, they didn't
D. Yes, they did.
人工流产时突然发生血压下降，脉搏变慢，首先考虑为（）。
A.羊水栓塞
B.人工流产综合征
C.穿孔内出血
D.宫颈裂伤
E.空气栓塞
