功能敛肺止咳的药物是

A．瓜蒌、贝母
B．紫菀、款冬花
C．桑白皮、葶苈于
D．马兜铃、枇杷叶
E．五味子、罂粟壳

A chock is a（）.

A.deck fitting used to secured mooring lines

B.casting fitting at the side of a weatherdeck, used as a fairlead

C.sharp block of wood used to support hygroscopic cargo

D.smoke pipe for the galley stove