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【判断题】
三个具有相同频率、相同振幅，但相位上彼此相差120°的正弦交流电压、电流、或者电动势，统称为三相电。()A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】下面程序的运行结果是( ) int num=0; while(num<=2){ num++; System.out.println(num); }
A.
1
B.
1 2
C.
1 2 3
D.
1 2 3 4
【单选题】下面程序的运行结果是( )。 int num=0; while(num<=2) { num++; System.out.println(num); }
A.
1
B.
1 2 3
C.
1 2
D.
1 2 3 4
【简答题】Peter’s grandpa is talking with Helen, an old lady on the train about their families. Listen to the conversation and decide whether the following statements are true (T) or false (F).
【简答题】简述青少年初期的学生和运动员在认识能力上有哪些心理特点？
【单选题】I decided to stop to have lunch ____i was feeling very hungry.
A.
for
B.
or
C.
so
D.
but
【多选题】Read the title and first sentence of each paragraph. Choose all the things you think the article will say you should do at a job interview. Title: Job Interviews 101 First Sentence of Each Paragraph...
A.
Find out as much as you can about the job.
B.
Wear your most comfortable clothing.
C.
Don’t smile; you want the interviewer to take you seriously.
D.
Let the interviewer do all the talking.
E.
Don’t interrupt the interviewer when he or she is talking.
【简答题】Job p________ for college students don't look good this spring.
【单选题】下面程序的运行结果是( )。 main() {int num=0; while(num＜=2) { num++; printf("%d\n",num); } }
A.
1
B.
1 2
C.
1 2 3
D.
1 2 3 4
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