扁桃体切除术的适应证是：（） A．并发扁桃体周脓肿 B．扁桃体Ⅱ度肿大 C．病灶性扁

计算5×6和6×5时，用的口诀是（    ）。

A monument was set up at the centre of Tian’men Square ______ those who devoted their lives to our country.

A．in praise of

B．in place of

C．in memory of

D．in need of

— I'll tell Mary about our changes tomorrow. 

— What? You ______ her yesterday. [ ]

A. ought to tell

B. must have told

C. might have told

D. should have told

把Z的课安排在下面哪一天就可以完全确定U的上课时间

A．周一

B．周二

C．周三

D．周四

低压透平膨胀机油压偏低的原因及处理方法？