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【单选题】
What was the cause of the patient's disease?A.
Headache.
B.
Stomach trouble.
C.
Disturbance of conscience.
D.
Some unknown physical weakness
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反馈参考答案：
举一反三
【单选题】如果定时/计数器2的输入时钟CLK2为1KHz，采用1方式，且要求输出的低脉冲的宽度为4秒，则定时/计数器0的计数初值应该是（ ）。
A.
5000D
B.
4000D
C.
500D
D.
400D
【单选题】The United States Constitution provides for a count of the population ______a census, every ten years.
A.
called
B.
which called
C.
that it is called
D.
as called
【判断题】According to the American Constitution the American Census should be held every 10 years.
A.
正确
B.
错误
【简答题】机床夹具的组成及作用?
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