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【单选题】
Speaker A: Did she really use to be very thin? Speaker B: ______A.
How do you know that?
B.
Yes, she did, but she isn't any more.
C.
I can't believe what you've said.
D.
I'm afraid that you are totally wrong.
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【单选题】By saying 'Let's hope that this time it really will be the last one', the father meant that______.
A.
he hoped there would be no more wars in the world
B.
he wished the Second World War had not happened
C.
he hoped people would build more bonfires
D.
he wished people would learn many lessons from the war
【单选题】下列关于休止角的正确表述为
A.
休止角越大,无聊的流动性越好
B.
休止角大于300,物料的流动性好
C.
休止角小于 300 ,物料的流动性好
D.
粒径大的物料休止角大
E.
粒子表面粗糙的物料休止角小
【简答题】写出下面大写字母的小写字母,并按顺序排列出来(手写拍照上传): B ( ) Y ( ) Q ( ) T ( ) D ( ) E ( ) U ( )
【单选题】下列关于休止角的正确表述为
A.
休止角越大,物料的流动性越好
B.
粒子表面粗糙的物料休止角小
C.
休止角小于30度,可认为物料流动性好
D.
休止角小于40度,可认为物料流动性好
E.
粒径大的物料,休止角大
【简答题】写出下面小写字母的大写字母,并按顺序排列出来(手写拍照上传): c ( ) a ( ) r ( ) m ( ) g ( ) p ( ) h ( )
【简答题】复合管分()型管组合和()型管组合两种。复合管的等效电流放大系数β=()
【简答题】土地填埋处置主要分为_______、_______、_______和_______四类。
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