以下提供若干组考题，每组考题共用在考题前列出的A、B、C、 D、E五个备选答案。请从中选择一个与问题关系最密切的答案。某个备选答案可能被选择一次、多次或不被选择。

对原核和真核生物蛋白质合成都抑制的是

A．氯霉素
B．链霉素
C．白喉毒素
D．林可霉素
E．嘌呤霉素

Serving is（）.

A.marine or ratline would along the grooves of a rope

B.narrow strips of light canvas or cotton cloth spiral-wrapped along the rope

C.marline tightly wound on the rope by means of a board or mall

D.a splice made by laying the strand of one rope into the vacated grooves of another rope