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【单选题】
用容量瓶配制溶液时,摇匀时定容至刻度还是摇匀后再定容至刻度?A.
摇匀时先定刻度
B.
摇匀后再定容至刻度
C.
都可以
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Farmers should not be blamed for the rise because______.
A.
they produce the vegetables and other things
B.
they get only a small share in the profit
C.
they work very hard
D.
their cost of living has also risen
【单选题】Hearing the old man's reports, the officer from his seat and said that something must be done to people's living standards. A. raised; rise B. rose; raise C. raised; raise D. rose; ...
A.
raised; rise
B.
raised; raise
C.
rose; rise
D.
rose; raise
【简答题】“文”“化”二字联用,较早见于( ):“刚柔交错,天文也。文明以止,人文也。观乎天文,以察时变。关乎人文,以化成天下。”
【单选题】Farmers should not be blamed for the rise because______.A.they produce the vegetables an
A.
5：Farmers should not be blamed for the rise because______. A.they produce the vegetables and other things
B.
they get only a small share in the profit
C.
they work very hard
D.
their cost of living has also risen
【多选题】力偶的特点，下列说法不正确的是（）
A.
力偶可以用力来维持平衡
B.
力偶的合成结果仍为一力偶
C.
力偶矩大小相等，方向相反的二力偶，互为等效力偶
D.
力偶不可以任意搬动
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