信用卡销户结清须在申请成功（）天后方可办理销户结清交易。A.15 B.30 C.45

I told Sally how to get here, but perhaps I ________ for her.

A．had to write it out

B．must have written it out

C．should have written it out

D．ought to write it out

国产三牙轮钻头适用于中软地层钻头的颜色是：（）。

A、乳白

B、灰

C、黄

D、浅蓝

三环抗抑郁药（TCAs）最常见的不良反应（）

A.锥体外系不良反应

B.过敏反应

C.心律及心电图变化

D.粒细胞减少

E.抗胆碱能不良反应

In spite of a problem with the faulty equipment, some very useful work was accomplished.

A. imperfect
B. temporary
C. emergency
D. reinstalled

"养生"中的"养"不包括的内容是（）

A.保养

B.调养

C.补养

D.滋养

E.护养