旋风分离器是利用()作用来分离含尘气体中的尘粒的设备。
A、向心力
B、重力
C、离心力
D、引力
参考答案:C
Wind power is an ancient source of energy ___________ we may return in the near future.
A.on which
B.by which
C.to which
D.from which
重力沉降除尘器的除尘原理是什么?