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【单选题】
用保养法保养停用的锅炉，注入的锅水应该是（）A.
中性
B.
弱酸性
C.
有适当碱度
D.
普通蒸馏水
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反馈参考答案：
举一反三
【单选题】You will succeed in the end_______you don't give up halfway.
A.
even if
B.
as though
C.
as long as
D.
unless
【简答题】If someone says to you, “give me five”, don't give five yuan to him! It will make others laugh! The person isn't asking for your money, but your fingers. In the U.S.A, “give me five” or “give me the h...
【简答题】温度和压力相同的两种理想气体混合后，则温度和压力不变，总体积为原来两气体体积之和，总热力学能为原两气体热力学能之和，总熵为原来两气体熵之和。
【单选题】—Science is too for me. I always fail in the exams. —Don't give up. You will be successful. [ ]
A.
useful
B.
interesting
C.
easy
D.
difficult
【简答题】Don't give____, then you will achieve your dreams in the future.
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