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【单选题】
地龙退热的主要成分是A.
蚯蚓素
B.
琥珀酸
C.
蚯蚓解热碱
D.
微量元素
E.
蚯蚓毒素
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举一反三
【简答题】幼儿园园长实行任期制,每届任期一般为( )年,可连任。
【单选题】If cleaning one guest unit takes approximately 30 minutes, and one guest attendant can work 7 hours a day. How many guest room attendants will the hotel need if there are 100 guest units and the booki...
A.
5
B.
6
C.
7
D.
8
【简答题】幼儿园适龄幼儿一般为____周岁到____周岁。幼儿园一般为____年制。
【简答题】In every language there seem to be certain "unmentionables" — words of such strong implications that they cannot be used in polite speech. In English, the first of these to come to mind are, of course...
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