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【单选题】
风机和水泵属于( )性质负载。A.
恒功率负载
B.
恒转矩负载
C.
二次方律负载
D.
转速负载
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反馈参考答案：
举一反三
【单选题】关于握手的次序,描述正确的有:( )
A.
上级与下级握手应由下级先伸手
B.
迎接客人时应该主人先伸手
C.
男士与女士握手应由男士先伸手
D.
长辈与晚辈握手应由晚辈先伸手；
【单选题】( )Look at that young woman!That would be his ________ wife.
A.
third
B.
the third
C.
three
D.
the three
【单选题】—Is that man Johnny Dean ? —Yes.He is ______ . Look at that woman.She is Tina Brown and she is ______.
A.
pretty ; handsome
B.
handsome ; pretty
C.
handsome ; medium height
D.
tall ; long hair
【单选题】Look at that woman! She's the woman ______ son is a famous film star. [ ]
A.
which
B.
that
C.
whose
D.
who
【单选题】Look at that woman, who is she?
A.
Yes, she is.
B.
She is Emma's mother.
C.
She is Emma's aunt.
【简答题】A:Look at that woman. She looks like she's going to faint. B:Let's go to her. She ______________ need help.
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