使用天平称量有哪几种方法?
参考答案:
有以下方法:
(1)直接称量法。
(2)称取指定重量的试样。
(3)差减称量法。
Mr smith has little acquaintance_____modern poetry while he has a wide knowledge ___ painting.When it comes _____music,he has a talent_______it.
A.with; of ; to; for
B.of; about; to; of
C.with; about; at; of
D.of; of; to; for
配网基建工程的电子化移交不涉及到营销系统。