【单选题】质量验收时,水泥砂浆面层的主控项目不包括( )。
A.
水泥采用硅酸盐水泥、普通硅酸盐水泥,其强度等级不应小于32.5,不同品种、不同强度等级的水泥严禁混用
B.
水泥砂浆面层的体积比(强度等级)必须符合设计要求,且体积比应为1:2,强度等级不应小于15 m
C.
面层表面的坡度应符合设计要求,不得有倒泛水和积水现象
【单选题】The old man was totally ecstatic.
【判断题】There are totally 50 states in the U.S.()
【多选题】某厂电焊工甲和乙进行铁壳点焊时,发现焊机一段引线圈已断,电工只找了一段软线交乙自己更换。乙换线时,发现一次线接线板螺栓松动,使用板手拧紧(此时甲不在现场),然后试焊几下就离开现场,甲返回后不了解情况,便开始点焊,只焊了一下就大叫一声倒在地上。工人丙立即拉闸,但由于抢救不及时而死亡。
今后采取哪些预防措施,能合理有效防止该类事故的发生:()
【单选题】硅酸盐水泥的细度其比表面积应不小于( )
【简答题】The committee is totally opposed ________ ?The committee is totally opposed ________ any changes being made in the plans. A) of B) on C) to D) against
【简答题】The committee is totally opposed ________ ?The committee is totally opposed ________ any changes being made in the plans. A) of B) on C) to D) against
【简答题】A.She totally agrees with the man. B.She totally disagrees with, the man. C.She has no idea. D.She partly agrees with the man.