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【单选题】Stomach Ulcer Stomach ulcers are the cause of severe pain for many people. Doctors have been able to help lessen the pain of ulcers. They could not cure them. Now doctors have discovered a cause of ul...
A.
Right
B.
Wrong
C.
Not mentioned
【简答题】试述人力资源管理的主要内容。
【简答题】Experts do not really know when people began keeping fish as pets. But they say that people have been interested in fish for thousands of years. Some say the ancient Sumerians were the first civilizat...
【单选题】It can be inferred that Freud and Darwin are similar in that their theories
A.
have long been discredited.
B.
provide good guide for further research.
C.
are placed in the same category.
D.
are concerned about human being.
【单选题】Under the current/noncurrent method?
A.
a foreign subsidiary with current assets in excess of current liabilities will cause a translation gain (loss) if the local currency appreciates (depreciates).
B.
a foreign subsidiary with current assets in excess of current liabilities will cause a translation loss (gain) if the local currency appreciates (depreciates).
C.
a foreign subsidiary with current assets in excess of current liabilities will cause a translation gain (loss) if the local currency depreciates (appreciates).
D.
both b) and c)
【简答题】若排列1274i56k9是偶排列,则i=____,k=____.
【简答题】下例说法正确的在后面写“对”，错误的在后面写“错” （1）标准状况下任何气体的摩尔体积都是22.4L______ （2）酒精作为从碘水中萃取碘的萃取剂______ （3）3.0mol OH - 的质量为51g______（可能用到的相对原子质量H-1 O-16） （4）标准状况下，1mol H 2 和O 2 的混合气体的体积是22.4L______ （5）用试管取出试剂瓶中的Na 2 CO 3...
【多选题】下列实验操作或叙述正确的是 （填序号）
A.
乙醇中含有少量水可加入生石灰再蒸馏制得无水乙醇
B.
将无水乙醇和浓硫酸按体积比1∶3混合，加热至140℃制取乙烯
C.
为证明溴乙烷分子中溴元素的存在，可向溴乙烷中加入NaOH溶液，加热，加入稀硝酸至溶液呈酸性，加入AgNO 3 溶液，看是否有淡黄色沉淀
D.
向碘水中加入酒精，萃取碘水中的碘
E.
用饱和食盐水代替水与电石制备乙炔，目的是为了减缓反应速率
F.
将乙烯分别通入酸性KMnO 4 溶液和溴水中均褪色，褪色原理相同
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