–Is this raincoat yours?

–No, mine _____ there behind the door.

A．hangs

B．has hung

C．is hanging

D．hung

神经纤维末梢释放化学递质的方式是

A．单纯扩散

B．经通道易化扩散

C．继发主动转运

D．出胞作用

E．经载体易化扩散