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【单选题】
Which of the following statements represents the FIRST precaution to be taken prior to working on any installed electrical component _____.A.
Wear rubber gloves and boots
B.
Use only approved non-conducting tools
C.
Ground the case of the machine before beginning any repairs
D.
Open the supply circuits and tag the switches
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举一反三
【单选题】品种法成本计算期的特点是()。
A.
按月定期计算成本，与生产周期一致。
B.
按月定期计算成本，与生产周期不一致。
C.
按月定期计算成本，与会计报告期不一致。
D.
按月定期计算成本，与会计报告期一致。
【简答题】听下面一段材料，回答第1-3题。 1. Where are the two speakers? A. In the library B. In a department store C. In the street 2. Who are the two speakers? A. A woman and his husband. B. A woman and a passer-by. C. A wo...
【单选题】A. The marketing Department B. The Production Department C. The Sales Department D. The Engineering Department
A.
The marketing Department
B.
The Production Department
C.
The Sales Department
D.
The Engineering Department
【单选题】根据所听到的内容答题__________
A.
In a school.
B.
In a hospital.
C.
In a department store.
D.
In a hotel.
【单选题】关于中断请求信号的说法中,正确的是( )
A.
4
B.
中断请求信号是自动产生的
C.
中断请求信号有时是由CPU发起的
D.
中断请求信号是由CPU和输入/输出设备同时发起的
E.
中断请求信号总是由输入/输出设备发起的
【简答题】A. The marketing Department B. The Production Department C. The Sales Department D. The Engineering Department
相关题目：
【单选题】根据所听到的内容答题__________
A.
In a school.
B.
In a hospital.
C.
In a department store.
D.
In a hotel.
参考解析：
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