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