汽轮机安装完毕后或每次大修后启动都必须做超速试验。
参考答案:对
--- Would you like to try _____ time?
--- Sure.
A.two
B.second
C.a two
D.a second
外感咳嗽迁延不愈,表邪未尽或感邪复发,咽痒咳痰不爽,痰稠粘者,宜选用()
A.三拗汤
B.止嗽散
C.桑杏汤
D.麻杏石甘汤
E.杏苏散