题目内容

如果要用定时器T0作计数,软件启动,用方式1,则TMOD初始化编程为( )。

A. TMOD=0x06;
B. TMOD=0x50;
C. TMOD=0x10;
D. TMOD=0x05;

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51单片机定时器工作方式2是指的( )工作方式。

A. 8位定时/计数器
B. 16位定时/计数器
C. 13位定时/计数器
D. 自动重装初值的8位定时/计数器

We welcome rain, but a(an) ________ large amount of rainfall will cause floods.

A. extensively
B. extremely
C. especially
D. constantly

Oh, God, she’s back to again hassle me.

A. attack
B. distract
C. persuade
D. annoy

After the storm the lake returned to its usual calm state.

A. flaccid
B. placid
C. lucid
D. acid

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