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【单选题】
( )从中药水提液中萃取皂苷类成分,常加入下列溶剂中的:_________.A.
正丁醇
B.
乙醚
C.
乙酸乙酯
D.
丙酮
E.
三氯甲烷
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举一反三
【简答题】What are the writing principles of business letters?
【单选题】What accounts for the great outburst of major inventions in early America—breakthrough such as the telegraph, the steamboat and the weaving machine? Among the many shaping factors, I would single out ...
A.
elementary schools
B.
enthusiastic workers
C.
the attractive premium system
D.
a special way of thinking
【单选题】在Word编辑状态下，若要使“文件”菜单中有“全部保存”命令，在选择“文件”菜单之前应按______
A.
Alt键
B.
Tab键
C.
Ctrl键
D.
Shift键
【简答题】商业银行经营的三条原则是盈利性、流动性和（ ）
【多选题】What are the writing characteristics of Henry Fielding?
A.
His language is easy, unlabored and familiar, but extremely vivid and vigorous.
B.
His sentences are always distinguished by logic and rhythm.
C.
His structure carefully planned towards and inevitable ending.
D.
His works are also noted for lively, dramatic dialogues and other theatrical devices such as suspense(悬念), coincidence(偶合) and unexpectedness(始料不及).
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