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【单选题】
下图中三棱锥的侧面投影是:A.
B.
C.
D.
D
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举一反三
【单选题】-Need I do the repairs now? Yes,_________.
A.
you need:;but you need ask someone to help you
B.
you must;but you can ask someone to help you
C.
you need; but you can ask someone to help you
D.
you must:;but you need ask someone to help you
【单选题】--Need I clean the room now? --Yes, you ___, but you ___ ask someone to help you.
A.
need, need
B.
must, can
C.
need, can
D.
must, need
【简答题】I don't want a lot for Christmas There is just one thing I need I don't care about the 1 Underneath the Christmas tree I just want you for my own More than you could ever know Make my wish 2 oh All I ...
【单选题】根据现行的国家标准，下列哪一项指标不属于电能质量指标？（）
A.
电压偏差和三相电压不平衡度限值
B.
电压波动和闪变限值
C.
谐波电压和谐波电流限值
D.
系统短路容量限值
【单选题】—Need I accomplish all we have set out to do? —Yes, you ____; otherwise you ____fired.
A.
need; would have been
B.
may; need have been
C.
can; mustn't have been
D.
must; would be
【简答题】 Dialogue 7 A : Good morning. What’s the matter? B : 1 A : Do you have a headache? B : Yes, I do. A : Open your mouth and say “Ah”. B : Ah. A : 2 B : No, I didn’t. I felt terrible last night. A : Oh,...
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