![](https://lstatic.shangxueba.com/sxbzda/h5/images/m_q_title.png)
[单选题]
硅酸盐水泥初凝时间不得早于(),终凝时间不得迟于()
A.45min;7h
B.45min;6.5h
C.60min;7h
D.60min;6.5h
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)
A.45min;7h
B.45min;6.5h
C.60min;7h
D.60min;6.5h
第3题
A.硅酸盐水泥的初凝不小于45min,终凝不大于390min
B.普通硅酸盐水泥初凝不小于45min,终凝不大于600min
C.矿渣硅酸盐水泥和火山灰质硅酸盐水泥初凝不小于45min,终凝不大于390min
D.粉煤灰硅酸盐水泥和复合硅酸盐水泥初凝不小于45min,终凝不大于600min
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!