水泥混凝土路面采用滑模施工时要求最大水灰比不超过()
A、0.42
B、0.44
C、0.46
D、0.48
参考答案:B
.
Something _______ wrong with the machine, and it _______ not work.
A.being; could
B.going; should
C.were; might
D.went; would
全球通客户使用积分兑换6个月手机邮箱,需多少积分()。
A.500
B.1000
C.1500
D.2000