证见咽中如有物阻，咯吐不出，吞咽不下，胸膈满闷，或咳或呕，舌苔白润或白滑，脉弦缓或弦滑，宜用（）

A.半夏泻心汤

B.贝母瓜蒌散

C.半夏厚朴汤

D.清气化痰丸

E.半夏白术天麻汤

When lowering lifeboats in heavy seas，a good practice is to rig frapping lines（）.

A.on only the forward falls

B.on only the after falls

C.with a lead of about 45 degrees to the boat

D.from the falls to the main deck of the vessel