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【多选题】
属于必需微量元素的是A.
硒
B.
镁
C.
锌
D.
铁
E.
钾
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【简答题】Can you give me a(n) ( ) answer to this question? (明确的)
【单选题】—I don't know which to buy. Can you give me some advice? —You _______ try on this T-shirt. It looks nice. [ ]
A.
had not better
B.
had better not
C.
had better
D.
had better to
【单选题】关于无限大电源供电情况下发生三相短路时短路电流中的非周期分量,下述说法中正确的是
A.
三相短路电流中的非周期分量起始值相等
B.
空载情况下发生三相短路时，三相短路电流中的非周期分量起始值相等
C.
负载情况下发生三相短路时，三相短路电流中的非周期分量起始值相等
D.
任何情况下发生三相短路时，三相短路电流中的非周期分量起始值都不会相 等
【简答题】Can you give me a(n) _____ answer to this question?
【简答题】Can you give me a(n) ______ answer to this question?(truth, retire, quality, outstanding, wonder, definite, available, influence, disease, ease)
【简答题】单词拼写（共5小题，每小题1分，满分5分） 小题1:I would ______ （感激） it if you give me a chance． 小题2:Do not regard English learning as a _____ （负担）． 小题3:I won't _____ （容忍） your behaving in this way． 小题4:It's a good habit to...
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