题目内容

Only when we hurried to the airport__________the flight was cancelled.

A. we found
B. did we find
C. have we found
D. we have found

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When ___________to zero degree centigrade, water will be changed into ice.

A. cooled
B. being cooled
C. having cooled
D. cooling

包合材料是：（）

A. 阿拉伯胶-明胶
B. Eudragit RS
C. b－CD
D. HPMCP

但曲

简述连续重整P-101入口阀门开不动的处理。