栗实腐烂病主要发生在（） A.发芽期 B.开花期和展叶期 C.成熟_爱下问搜题

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问题单项选择题

栗实腐烂病主要发生在（）

A.发芽期

B.开花期和展叶期

C.成熟期

D.贮藏期

答案

参考答案：D

选择题

Some modern teaching equipment as well as hundreds of books _____ to the rural schools.

A. had been donated
B. was donated
C. have donated
D. were donated

单项选择题

依地酸二钠属于注射剂的哪一类附加剂（）

A.防止主药氧化

B.增加主药溶解度

C.调PH值

D.抑菌

E.调渗透压