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【单选题】
活塞的最大磨损部位是( )
A.
活塞环槽
B.
活塞销座
C.
活塞裙部
D.
活塞顶部
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【单选题】胃肠黏膜的损害因素,下列哪项不妥
A.
非甾体类药物
B.
吸烟
C.
过度精神紧张
D.
刺激性饮食
E.
前列腺素
【单选题】It is during the Second World War ____he died.
A.
when
B.
after
C.
before
D.
That
【单选题】— Mr White has been working all the morning with no rest.— He is a(n) ________ man. He never look
A.
29.— Mr White has been working all the morning with no rest. — He is a(n) ________ man. He never looks tired. A.energetic
B.
powerful
C.
lovely
D.
Attractive
【单选题】( 北京卷 )29. As soon as he comes back, I’ll tell himwhen __________ and see him.
A.
you will come 
B.
will you come  
C.
youcome  
D.
do you come
【单选题】The computer system _______ suddenly while he was searching for information on the Internet.A.br
A.
29. The computer system _______ suddenly while he was searching for information on the Internet. A.broke down
B.
broke out
C.
broke up
D.
broke in
【单选题】Can you say _____ certain when he will come here?
A.
at
B.
for
C.
with
D.
In
【单选题】导热性差的材料,在热处理加热和冷却时( )出现变形。 ( A )易 ( B )不易 ( C )关系不大
A.
a
B.
b
C.
c
D.
d
【单选题】胃肠黏膜的损害因素,下列哪项不妥
A.
非甾体类药物
B.
吸烟
C.
过度精神紧张
D.
刺激性食物
E.
前列腺素
【单选题】—How did he break his head while swimming? —______ my warnings, he dived straight into the shallo
A.
29.—How did he break his head while swimming? —______ my warnings, he dived straight into the shallow water. A.To ignore
B.
Ignored
C.
Ignoring
D.
Being ignored
【单选题】导热性差的材料,在热处理加热和冷却时( )出现变形和开裂。
A.
B.
不易
C.
关系不大
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