防火隔间的门为（）。
A.甲级防火门
B.乙级防火门
C.丙级防火门
D.任意级防火门
参考答案：A
解析：防火隔间的门是甲级防火门。
—Have we water?
—Yes, . We’d better get some.
A．run out of; we have run it out
B．run out of ; our water has run out
C．run out of; our water has been run out
D．run out; our water has run out
简述汽轮机调节系统的基本组成。
