全身预防性止血错误的是（）。
A、注射葡萄糖酸钙
B、注射维生素K
C、注射安络血
D、注射止血敏
E、注射肾上腺素
参考答案：E
—Tom, the workers _____our new library already.
—Really? I'll go there and borrow some books. [ ]
A. decorated
B. are decorating
C. have decorated
D. were decorated
属于阴离子型表面活性剂的是（）
A．司盘20
B．十二烷基苯磺酸钠
C．苯扎溴铵
D．卵磷脂
E．吐温80
