驱动阀门主要包括( )。
A．截止阀
B．节流阀
C．安全阀
D．浮球阀
参考答案：A,B
This room is ___________ that room.
A．as three times big as
B．three times as bigger as
C．three times as big as
D．as big as three times
李世民衡量下属好不好的标准之一是（）
A.本质是否正直
B.是否听话
C.是否理解领导
D.是否让领导开心
