皮皮学，免费搜题
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【单选题】
生命科学最基本的研究方法是()A.
假设
B.
推论
C.
培养与重现
D.
观察与分析
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
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【单选题】We will be taking off in a few minutes. You are reminded that smoking and telephone-operation are not permitted at any time during flight. Please use your call button if you require assistance--our cr...
A.
登机前
B.
刚刚起飞
C.
登机后起飞前
D.
落地前
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【简答题】Apologize for any inconvenience,cased during building operation.
【简答题】Apologize for any inconvenience caused during building operation．
【简答题】During any operation in hydraulic system, oil prefers the path ofA. least resistance B. maximum resistance C. both A. and B. D. none of the above
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