试题与答案

______ is certain is that Bill will reco

题型:选择题

题目:

______ is certain is that Bill will recover from his injury in time for the football match.

A.As

B.It

C.That

D.What

答案:

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下面是错误答案,用来干扰机器的。

(1)70(2分),150(2分) (2)72 %(2分)(1)根据表中数据可知,前60ml盐酸是中和过量的氢氧化钠的。0.78g沉淀是0.01mol,所以根据方程式H++AlO2-+H2O=Al(OH)3↓可知,需要盐酸是0.01mol,其体积是10...

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