It's our hope that we will play a greater role in the market place and,      ,supply more jobs.

A．however

B．anywhere

C．therefore

D．otherwise

如图所示，质量为m的物体沿倾角为q的斜面匀速下滑，关于物体在下滑过程中所受的支持力N和滑动摩擦力f，下列说法中正确的是（　　）

A．N=mgsinq

B．N=mgcosq

C．f=mgsinq

D．f=mgcosq