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【多选题】
下列说法正确的有A.
商务楼层是为接待商务客人而设置的楼层
B.
商务楼层一般处于饭店最上部的层次
C.
行政楼层住宿的客人一般是高级别的行政官员、金融大、商业巨子或其他社会名流米。
D.
行政楼层每间客房的面积一般不小于30平方米
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举一反三
【单选题】— Look, that's Tom-the lost boy! — It's really great comfort to see him safe again. He is sure to bring comfort to his worried mother. [ ]
A.
a; a
B.
the; the
C.
a; /
D.
the; /
【单选题】Look before you leap! You have to ______the costs of the new system against the benefits it will bring.
A.
weigh
B.
match
C.
defend
D.
Fight
【单选题】听力原文：Interviewer: Well, today on Starting Out, we look at the sandwich industry in Britain. I have with me Brian Fraser, the owner of 'Designer Sandwiches', and Geraldine Holmes, another successful sa...
A.
His first shop was unpopular.
B.
He had to close one of the shops.
C.
His second shop didn't open on time.
【简答题】能量信号的特点?
【简答题】能量信号的特点________
【简答题】信号按信号的能量特点进行分类：
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