腕骨骨折发生率最高的为()
A.舟状骨
B.三角骨
C.月骨
D.大多角骨
E.小多角骨
参考答案：A
—It’s hard to believe that Jack ________ have fought with the policeman.
—Yes.If one ________ ask for trouble, it can't be helped.
A．would; will
B．must; may
C．should; must
D．need; dare
水泵接合器的数量应按室内消防用水量计算确定，选用每个水泵接合器的流量为 ( )。
A．5～10 L/s
B．10～15 L/s
C．15～20 L/s
D．20～25 L/s
