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【多选题】
下列关于圈梁，说法正确的是（）。A.
一般情况下，圈梁必须封闭。
B.
过梁可以兼做圈梁。
C.
圈梁可以兼做过梁。
D.
当遇有门窗洞口时，需增设附加圈梁。
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【单选题】Man: Prof. Johnson sure was acting strangely today. Woman: I noticed that too. He was talking so quietly and then not giving us any homework. Can you believe that? Question: What can be inferred about...
A.
He usually assigns homework.
B.
He usually talks quietly.
C.
He didn't teach class today.
D.
He noticed that the students didn't do their homework.
【单选题】The doctor told penny that too much () to the sun is bad for the skin.
A.
exposure
B.
addition
C.
emotion
D.
attention
【简答题】商业秘密是指能够为权利人带来经济利益的技术信息。 （ ）
【简答题】The old man realized that too much salt was harmful to health. ( 改为否定句 ) The old man ______ ______ that too much salt was harmful to health.
【简答题】商业秘密是指能够为权利人带来经济利益的技术信息。 （ ）
【简答题】商业秘密是指能够为权利人带来经济利益的技术信息。（ ） A．对 B．错
【单选题】His speech rambled for half an hour, but the ______ of what he had said was that too many people has too little money.
A.
aim
B.
purpose
C.
essence
D.
content
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