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【单选题】
计算机系统中的存储系统是指( )。A.
RAM存储器
B.
ROM存储器
C.
主存储器
D.
主存储器和辅助存储器
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反馈参考答案：
举一反三
【判断题】Power is equal to (1 – b ), the probability of a test rejecting the null hypothesis that is indeed false.
A.
正确
B.
错误
【判断题】If purchasing power parity holds, the real exchange rate is always equal to 1.
A.
正确
B.
错误
【单选题】In the illustrated circuit, us=50sin V, the active power (the average power)on a 5 Ω resistor is P1=I1.^2*R1=10 W, the active power of the resistor R2=10Ω is calculated by the equation P2=I2.^2*R2=20W...
A.
0.3
B.
0.6
C.
0.8
D.
uncertain
【单选题】Symmetrical three-phase circuit is shown in the figure, the known parameters are as follows, then the reading of the power meter 1 is W1=_____W, the reading of the power meter 2 reads W2=_______W. C...
A.
190W,190W
B.
190W,380W
【单选题】In the illustrated circuit, us=100cos100t V, the active power (the average power)on the load is P=UIcos φ =6W, the reactive power of the load is Q=UIsin φ =8var. We can find out that the apparent powe...
A.
6uF
B.
8uF
C.
12uF
D.
16uF
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