水封的有效高度为管网计算压力加()。
A、600mm
B、500mm
C、800mm
参考答案:C
—Look! There are lots of old people in the park.
—They look relaxed. Some are playing the card , ___________ are chatting.
A.another
B.the other
C.other
D.others
在开展党的群众路线教育实践活动中,以下哪项为总要求?()
A.坚持中 * * 党的领导
B.“照镜子、正衣冠、洗洗澡、治治病”
C.民主,法治,文明,和谐
D.广泛实行“三三制”