题目内容

Oil prices in China now follow trends.

A. urgent
B. global
C. previous
D. critical

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New China has been promoting closer with other countries for world peacesince its founding in 1949.

A. cooperation
B. benefit
C. proportion
D. concern

This morning Microsoft CEO Satya Nadella the published a report on his for thecompany’s future.

A. signal
B. solution
C. head
D. vision

TTL与非门电路输入端悬空相当于接（）。

A. 高电平
B. 低电平

对于TTL与非门中闲置输入端的处理，不可以()。

A. 接电源
B. 通过3KΩ电阻接电源
C. 与有用输入端并联
D. 接地