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【单选题】
下列哪个不是影响对流传热的主要因素?( )A.
流动起因
B.
tw
C.
ε
D.
换热面的几何形状。
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反馈参考答案：
举一反三
【单选题】We met an old friend in New York ____our expectation. She waved at us _____ the street when she saw us.
A.
with; in
B.
out of; next to
C.
in; out of
D.
beyond; from across
【单选题】I waved to see him off and watched the train until it disappeared . [ ]
A.
at a distance
B.
from a distance
C.
in the distance
D.
within a distance
【单选题】When ( ) the airport, she waved again and again to us.
A.
leaving
B.
left
C.
having left
D.
having been leaving
【简答题】She waved to him, blowing kisses as though she was _______ board an ocean liner that was carrying her away from him forever.
【单选题】— _____________ do you have PE? — Twice a week. [ ]
A.
How many
B.
How much
C.
How often
D.
When
【单选题】Nobody tells us ______, can you help? [ ]
A.
how we should do
B.
how to do it
C.
what to do it
【单选题】I waved to Nancy, but she was ______ in her thoughts, and made no response.
A.
involved
B.
stuck
C.
absorbed
D.
interested
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