A．丙酮 B．乙醚 C．冰醋酸 D．N，N-二甲基甲酰胺 E．甲醇以下药物含量测定所用的溶剂为 硝酸士的宁A．B

Do remember______me a call when you arrive in Shanghai.

A．giving

B．having given

C．to give

D．to have given

听力原文：Do you happen to know when I should return Jones' call？

(A) Yes, you have to call him tomorrow morning.

(B) No, it's not cold.

(C) I don't know why he called you.

(7)

A．

B．

C．

A、Tell the chief officer and the chief engineer the time of arrival ahead of time.

B、Talk with the crew.

C、Stay on stern.

D、Walk on the deck.

A、Nice to see you.

B、See you later.

C、No, I don’t.

D、Take care.

When accepting engine room spares, you should .

A.send a requisition list to the supplier

B.check that whether the items ordered have been already delivered

C.make the chief engineer on sport

D.follow a preset procedure