能全部通过四号筛,但混有能通过五号筛不超过60%的粉末是()
A.最粗粉
B.粗粉
C.中粉
D.细粉
E.最细粉
参考答案:C
不是其他工程费的构成费用的是()。
A.夜间施工增加费
B.特殊工种培训费
C.安全措施费
D.临时设施费
______ the traffic jam, he didn’t catch his plane, which was reported to have crashed soon after it took off.
A.Because of
B.On account of
C.Due to
D.Thanks to