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【单选题】
将4g氢氧化钠溶于水中，配制成为1升溶液，其溶液浓度为 （ ）A.
1mol/L
B.
4mol/L
C.
0.1mol/L
D.
0.4mol/L
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【单选题】Most people hold the view not that opposites attract each other but that like attracts like.
A.
Right
B.
Wrong
C.
Not mentioned
【简答题】Most peopte hold the view not that opposites attract each other but that like attracts like.
【简答题】I am a person who doesn’t like waiting. I don’t like to wait in line, being put on hold when a phone call, or arriving at an apartment to find that my companion will be . And of course, I don’t...
【简答题】为了测定空心线圈的参数, 在线圈两端加 110V 、 50Hz 的电源,测得 I = 0.5A , P = 40W ,则线圈电阻为 __________ , L = __________ 。
【简答题】I am a person who does not like to wait．I don' t like lines, being put on hold when a phone call, arriving at an appointment to find that my companion will be delayed and of course, I don * t l...
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