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【单选题】
地下室外墙做垂直防水层时,挖土每边留工作面( )。A.
500mm
B.
600mm
C.
700mm
D.
800mm
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反馈参考答案：
举一反三
【简答题】英译中 If, on the other hand, producing more of a commodity results in reducing its cost, this will tend to increase the supply offered by seller-producers, which in turn will lower the price and permit ...
【判断题】As a country moves up along its “bowed-out” production possibility curve, the opportunity cost of producing more of the good measured on the y-axis decreases.
A.
正确
B.
错误
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