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【判断题】
三相异步电动机旋转磁场的转速与交流电压最大值的大小成反比。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】(Short-answer Question) What is a register? What is the storage capacity of a register that can retain one byte of data? What does the “shift capacity” of a register mean?
【简答题】What is the main storage device in most computer systems?
【单选题】In a 32-bit computer system, if the first address of an int-type array array[n] is A, then what is the storage address of array[2]
A.
A + 2
B.
A + 4
C.
A + 8
D.
A + 12
【单选题】Many unnecessary items went by the wayside in the storage room. What is the meaning of the underlined words?
A.
to walk on one side of the way
B.
to be discarded
C.
to be put in the center
D.
to be treasured
【单选题】In a 32-bit computer system, if the first address of a short int array[n] is A, what is the storage address of array[2]
A.
A + 2
B.
A + 4
C.
A + 8
D.
A + 12
【单选题】Many unnecessary items went by the way side in the storage room. What is the meaning of the underlined words?
A.
to walk on one side of the way
B.
to be discarded（被抛弃）
C.
to be put in the center
D.
to be treasured
【单选题】What is pumped storage?
A.
Extracting electricity many times from the same water by constructing a series of dams along the water course
B.
Using a pump to increase water pressure when the head is low
C.
A way of releasing water from a reservoir to maintain the maximum possible head
D.
A mechanism for storing electricity by running a hydro scheme in reverse
【简答题】在古代,促进商业产生和发展最重要的两大因素是( )和自然环境。
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