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【单选题】
桥用C40的混凝土，经设计配合比为水泥:水:砂v碎石=380:175:610:1300，采用相对用量可表示为( )。A.
1:1.61:3.42:；W/C=0.46
B.
1:0.46:1.61:3.42
C.
1:1.6:3.4；W/C=0.46
D.
1:0.5:1.6:3.4
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举一反三
【单选题】It is indicated by 'kidnapping has become big business in many parts of the world' that ______
A.
kidnapping has become the most profitable business in many parts of the world
B.
there is a worldwide increase in kidnappings and many groups have make profits in kidnaps
C.
by kidnapping the kidnappers have established their corporations in many parts of the world and earn big money each year
D.
in many parts of the world more people have become kidnappers
【简答题】This book discusses a variety of major influences on the business world.
【简答题】His ideas have spread beyond the business world.
【单选题】设任意一个十进制整数位D转换成二进制数为B。根据数
A.
概念，下列叙述中确的是
B.
数字B的位数>=数字D的位数
C.
数字B的位数>数字D的位数
D.
数字B的位数<=数字D的位数
E.
数字B的位数
【简答题】The book discusses a variety of major influences on the business world．
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