题目内容

In China, decisions are made after having considered ___, _ and __.

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An American student that is not happy about the group not doing any work will probably try to convince the teacher to ____ the others.

查看数据的窗口为

A. d:0x30
B. C:0x30
C. F:0x30
D. A:0x30

计算次数为数据个数

A. 对
B. 错

单片机的4个并行I/O端口作为通用I/O端口使用，在输出数据时，必须外接上拉电阻的是。

A. P0口
B. P1口
C. P2口
D. P3口