题目内容
(请给出正确答案)
[主观题]
A.8 o'clockB.9 o'clockC.10 o'clockD.An hour late
A.8 o'clock
B.9 o'clock
C.10 o'clock
D.An hour late
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A.8 o'clock
B.9 o'clock
C.10 o'clock
D.An hour late
发电机带纯电阻性负荷运行时,电压与电流的相位差等于()。
A.180o;
B.90 o;
C.0 o;
D.270 o。
原油主要是由()四种元素组成的。
A.C;O;S;Ni
B.C;H;S;N
C.H;S;O;N
D.S;O;C;Fe
The candidate arrived ______ at 8 o'clock for the job interview.
A.directly
B.punctually
C.properly
D.immediately
A.O(1)
B.O(m+n)
C.O(log2mn)
D.O(m*n)