泵与风机减噪的根本途径在于（）。
A．采用管式消声器
B．采用片式消声器
C．从声源上治理
D．采用复合式消声器
参考答案：C
— Dr White has got plenty of information about UFO. He's promised to offer it to me.
— I have as much. Would you like to have mine____? [ ]
A. as well
B. as possible
C. so far
D. if so
客户连续输入（）次错误口令会使USBKEY被锁定，应到信用社柜面办理USBKEY解锁。
A.2
B.3
C.5
D.6
