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【单选题】
设N A 代表加德罗常数的值，下列说法不正确的是（ ）A.
加德罗常数N A 是0.012kg l2 C中所含的原子数
B.
2g氢气所含氢原子数目为N A
C.
标准状况下，11.2LNH 3 所含的原子数目为0.5N A
D.
含71gNa 2 SO 4 的溶液中所含Na + 离子数目为N A
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【简答题】上井作业是否要穿戴劳保用品，带安全帽？为什么？
【多选题】根据《建筑机械使用安全技术规程》（JGJ33-2012），7.1，一般规定中正确的是（）
A.
电力驱动的桩机，作业场地至电源变压器或供电主干线的距离应在200m以内
B.
安装桩锤时，应将桩锤运到立柱正前方2m以内，并不得斜吊
C.
当打桩船或排架的偏斜度超过2°时，应停止作业
D.
桩锤在施打过程中，操作人员应在距离桩锤中心10m以外监视
【判断题】在进行高压相关操作前,维修人员必须穿戴好劳保用品:戴好绝缘手套,穿好高压绝缘鞋。在戴绝缘手套前,必须要检查绝缘手套是否有破损的地方,要确保手套无绝缘失效。
A.
正确
B.
错误
【简答题】Translate the following sentences into Chinese: 1.Mary Magdalene is a loyal follower of Jesus and prominent in his ministry. Jesus intervenes on her behalf in an argument she has with Peter, according...
【简答题】从方框中选择合适的短语并用其正确形式 填空,完成句子或对话。can’ t wait, at school, be proud of, as well, be afraid of Tom always does well in all his subjects and his parents____________him. — Mrs Hand likes table tennis. — Righ...
【单选题】W: I do hope Peter do well in his studies this semester.M:__________A.Yes. I hope so.###SX
A.
W: I do hope Peter do well in his studies this semester. M:__________ A.Yes. I hope so.
B.
Yes. Dear. But I am afraid the school is not nice enough.
C.
Neither do I. I don' t think his words would be as good as gold.
D.
Yes. Although we believe our son is honest， he may not work hard enough as he says.
【单选题】— Peter told me he wanted to come with us. Is it OK for you? — I don't mind _____ he pays for his meals. [ ]
A.
as far as
B.
as well as
C.
as long as
D.
as soon as
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