汽轮机正常停机时，转子惰走时，不应破坏真空。
参考答案：对
硫磺与雄黄的相同功效是（）
A.解毒杀虫
B.解毒凉血
C.解毒止痛
D.解毒通便
E.解毒清热
----Shall I go and buy two more bottles of beer?
----No, I’ve already bought them yesterday. That be enough for us two.
A．can
B．may
C．should
D．might
