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问题 单项选择题

将0.002mol/LFeCl2溶液与0.10mol/LNH3H2O溶液等体积混合后，（）沉淀出现

。

A.有

B.无

C.无法确定

D.条件不够，无法计算出是否有

答案

参考答案：A

选择题

The house rent is expensive. I've got about half the space I had at home and I am paying ______ here.[ ]

A. as three times much

B. as much three times  

C. much as three times

D. three times as much    

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单项选择题

中枢神经系统病变所致者

A．Curling溃疡
B．十二指肠溃疡
C．Cushing溃疡
D．复发性溃疡
E．吻合口溃疡
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