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【判断题】
K2Cr2O7 标准溶液滴定 Fe2+ 既能在硫酸介质中进行,又能在盐酸介质中进行A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】Many older people begin to volunteer in satisfying activities，and stay active for many years in
A.
successful big company．
B.
successful small company．
C.
successfuI smalI businesses．
【简答题】商业信用通常有哪些工具?银行信用如何参与商业信用?
【简答题】For many the idea of your dream home is not buying a bigger home，but a home that you have built by yourself. A house that is unique and fit for your tastes and your lifestyle. It sounds great but wher...
【简答题】He returned to Britain in 1939, having ________ abroad for many y ears.
【简答题】(1)商业信用成本是( )%
【简答题】Many employers complain that the y have difficulty (find) enough qualified people for their companies.
【单选题】使用人工呼吸机时呼吸频率及潮气量应分别调节为（ ）
A.
8～9次/分，400～600ml
B.
10～16次/分，600～800ml
C.
17～18次/分，400～500ml
D.
19～20次/分，200～300ml
E.
21～22次/分，900～1000ml
【多选题】在制作主图时,文案的排版需要注意什么
A.
文案只需要放在空白处即可，不需要考虑排版问题
B.
文案最好进行左对齐、右对齐或者居中对齐
C.
文案要确定主标题、副标题和利益点，确定主次关系
D.
利益点要尽可能地突出
【单选题】—Why did you buy so many flowers? --Because today is a special day. My parents ________ for twenty years .
A.
married
B.
got married
C.
have been married
D.
have married
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