图示正弦电路中，Z=（40+j30）Ω，XL=10Ω，有效值U2=200V，则总电压 发布时间：2017-06-15 02:34 │ 来源：www.tikuol.com 题型：单项选择题 问题： 图示正弦电路中，Z=（40+j30）Ω，XL=10Ω，有效值U2=200V，则总电压有效值U为（）A.178.9VB.226VC.120VD.60V
题型：单项选择题 完形填空。 Body language is used by people for sending messages to one another. It is very __1__ because it can help you make yourself easily understood when you are talking with others; you are not just using words, but also using expressions and __2__ . For example, waving one's hand is to say" Good-bye" . Shaking hands means welcome, and clapping hands __3__ congratulations. Nodding the head means agreement, but shaking the head means disagreement. The gestures are __4__ both by the Chinese and foreigners as having __5__ same meanings. Different countries have different body language. For example, when in Russia, France and Arab people kiss each other when they meet, but men in China or Australia shake hands __6__ kissing. People in Puerto Rico like touching each other, but people in Britain do not touch each other. People in Arab like standing __7__ one another when they are talking, __8__ English people must keep a distance __9__ when they are talking. When you use a foreign language it is very important to know the meanings of gestures and movements in the foreign country. __10__ the customs will help you communicate with people and make you stay there much more pleased and comfortable.( ) 1. A. helpful ( ) 2. A. words ( ) 3. A. to mean ( ) 4. A. received ( ) 5. A. a ( ) 6. A. instead of ( ) 7. A. nearly ( ) 8. A. and ( ) 9. A. from ( ) 10. A. Taking B. difficult B. gestures B. mean B. accepted B. as B. stand for B. far away B. or B. of B. Refusing C. easy C. handshake C. means C. receiving C. / C. such as C. close to C. but C. to C. Following D. useless D. idioms D. meaning D. accepting D. the D. compared to D. side by side D. however D. away D. Saying 查看答案
题型：单项选择题 天气转凉，有不少学生感冒发烧。如果你是医生的话，请你给学生一些建议。请列举五条：（1）_________________________________________.（2）_________________________________________.（3）_________________________________________（4）_________________________________________.（5）_________________________________________. 查看答案
题型：单项选择题 请在下面的横线上，紧接上文再写两个句子。要求与上文句子的话题、句式、修辞手法相同。（4分）没有一本书的家，是没有一朵花的花园；没有一本书的家，是没有一只鸟的树林。没有一本书的家，________________；没有一本书的家，_______________。 查看答案
题型：单项选择题 请选出下面正确的程序段( )。A) int *s;scanf("%d",s); ┆B) int *s,k;*s=100; ┆C) int *s,k;char *p, c;s=&k; p=&c; *p='a'; ┆D) int *s,k;char *p, c;s=&k; p=&c;s=p; *s=1; ┆ 查看答案
