施工现场的施工管理人员及监理人员必须按规定配备()等常规检查工具。
A.卷尺
B.混凝土回弹仪
C.小锤
D.砂浆回弹仪
E.激光测距仪
参考答案:B, C, D
To complete the project as planned, the workers were busy working all day, only ______ a short rest once in a while.
A.to take
B.to have taken
C.having taken
D.taking
造成水、汽损失的主要原因()。
A、锅炉部分;
B、汽轮机部分;
C、各种水箱;
D、管道系统。