问题
单项选择题
运输巷道管路吊挂不低于（）
A.1.6m
B.1.8m
C.2m
答案
参考答案：B
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运输巷道管路吊挂不低于（）
A.1.6m
B.1.8m
C.2m
参考答案：B
 Professor Martin’s report says that children who attend a number of different schools，because their parents have to move around the country，probably make slow progress in their studies. There are also signs，says Professor Martin，that an unusually large number of such children are mentally affected. The professor says，“It’s true，my personal feeling is that children should stay in one school. But our findings are based on research and not on any personal feelings. ” Captain Thomas James，an Army lecturer for the past 20 years and himself a father of two，said，“I’ve never heard of such rubbish. Taking me for example. no harm is done to the education of my children，who change schools regularly—if they keep to the same system，as in our Army schools. In my experience—and I’ve known quite a few of them—Army children are as well adjusted as any others，if not more so. What the professor doesn’t appear to appreciate is the fact that in such situation children will adapt much better than grown-ups.”When this reached Professor Martin，he said that at no time had his team suggested that all children were backward or mentally affected in some way，but simply that in their experience there was a clear tendency.“Our findings show that while the very bright children can deal with regular changes without harming his or her general progress in studies，the majority of children suffer from constantly having to enter a new learning situation.” 小题1:Professor’s Martin’s report suggests that
小题2: According to the passage，Professor Martin's personal feeling.
小题3:From the passage，we can conclude that Captain James’ children_____.
小题4:About children and grown-ups，Captain James says that children____.
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Ni(CO)4(g) 该反应的ΔH ▲ 0 (选填“＞”或“＝”或“＜”)。
Cr2O72－＋H2O，若1L酸化后所得溶液中铬元素的总物质的量为0.55 mol，CrO42－有10/11转化为Cr2O72－。又知：常温时该反应的平衡常数K＝1014。上述酸化后所得溶液的pH＝ ▲ 。
Cr3＋
Cr(OH)3。用该方法处理10 m3 CrO42－的物质的量浓度为1.0×10—3 mol·L－1的废水，至少需要绿矾(FeSO4·7H2O，相对分子质量为278) ▲ Kg(保留两位小数)。