问题
单项选择题
供热站内泵的试运转应在其各附属系统单独试运转正常后进行，且应在有介质情况下进行试运转，试运转的介质或代用介质均应符合设计的要求。泵在额定工况下连续试运转时间不应少于()。
A．1h
B．3h
C．21
D．4h
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
供热站内泵的试运转应在其各附属系统单独试运转正常后进行，且应在有介质情况下进行试运转，试运转的介质或代用介质均应符合设计的要求。泵在额定工况下连续试运转时间不应少于()。
A．1h
B．3h
C．21
D．4h
参考答案：C
小题2:It’s the _____________ season in China because of Spring Festival. 小题3: Ask him if he wants to write something about staying ______________. 小题4: In fact, even the simplest everyday activities can make a real ___________to the environment. 小题5: You are not _______________to touch the exhibits. |