题目内容

参与生理止血的血细胞是( )

A. 红细胞
B. 嗜中性粒细胞
C. 淋巴细胞
D. 血小板

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更多问题

有序元素对相等的映射是一个()。

A. 散射
B. 不对等映射
C. 不完全映射
D. 单射

Φ(N)是欧拉函数,若N>2,则Φ(N)必定是偶数。()

A. 对
B. 错

The little girl was glad to see that the basket was filled ( ) apples.

A. off
B. in
C. on
D. with

She has won many awards, and has even written a book about her experiences in ( ) English.

A. learning
B. learn
C. learned
D. learnt

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