当单台运行的锅炉汽压升至使用工作压力时,应关闭主汽阀进行供汽。
参考答案:错
This project _____ considered thoroughly, and I’m sure it _____ finished on time.
A.must be; may be
B.should be; can be
C.may be; must be
D.can be; should
()指在定稿形成后,批注缮写印发要求的活动。
A.缮印
B.注发
C.用印
D.签署