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【单选题】
以下哪种物质不能作为冻干保护剂使用( )A.
甘露醇
B.
SDS-NA
C.
右旋糖酐
D.
蔗糖
拍照语音搜题，微信中搜索"皮皮学"使用
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【简答题】二次函数图像上任意点P(x,f(x)),关于y轴的对称点P'(-x,f(x))__________图像上
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【单选题】(2017洛阳三模)—You need to go to hospital. Your head ______so hot.—I think I have a fever. I ______terrible.
A.
feel; am feeling
B.
felt; have felt
C.
feels; am feeling
D.
is felt; have felt
【简答题】二次函数图像上任意点P(x,f(x))关于y轴对称的点P'(-x,f(x))与图像上的点P''(-x,f(-x))是____________________关系。
【简答题】vt. 进行、处理、实施
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