国标规定，硅酸盐水泥的终凝时间不得迟于（）小时。
D
暂无解析
Whiledoingcalculationfortheproject,thedesigners____anewsolutiontoageologicalproblem.
Ifyouwantapen,lookinsidethe_____ofthedesk.
AccordingtoStevenYoung,ifscientistsgetthedatathat________,theywouldpetitionforfasttrackstatus.
IfonlyI_____playtheguitaraswellasyou!
_____regulartraininginnursing,shecouldhardlycopewiththeworkatfirst.