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三角形联结的三相对称负载，若线电压为380 V，则相电压为V

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三角形联结的三相对称负载，若线电压为380 V，若相电流为10 A，则线电流为A。

三相电路越接近对称，中线电流就越小。

A. 对
B. 错

Confusable Words (选词填空：每空只填一个单词，用所给单词的适当形式)Group 1consist, compose, comprise, constitute1. Water is ____ of hydrogen and oxygen. 水由氢和氧组成。2. Water _ of hydrogen and oxygen. 水由氢和氧组成。3. North America _ of the United States, Canada, and Mexico. 北美洲包括美国、加拿大和墨西哥。4. The United States, Canada, and Mexico __ North America. 美国、加拿大和墨西哥合起来构成北美洲。5. North America _ the United States, Canada, and Mexico. 北美洲包括美国、加拿大和墨西哥。6. Ten stories _ the book. 十个故事组成了这本书。7. Seven days a week. 七天为一周。Group 2speed, rate, pace8. She can read at the _ of 100 words a minute. 她每分钟能阅读100个单词。9. He drove at a of 70 miles per hour. 他以每小时七十英里的速度行驶。10. The work progressed at a slow . 工作进展很慢。11. He must pay at the __ of 10 percent. 他必须按照百分之十的比率付款。12. If you advance one _, I will shoot you. 你再向前走一步，我就开枪了。13. We can’t go any faster. We’re already at top _. 我们不能再快了。我们已经全速前进了。Group 3tired, exhausted, worn out14. He became from hours’ reading. 他阅读了几小时，感到疲倦。15. He returned at last, too to eat anything. 他终于回来了，累得吃不下任何东西。16. He divorced his wife because he was _ from listening to her constant complaints. 听妻子不停地抱怨而厌烦，他为此和她离婚了。17. She was too _____ and distressed to talk about the tragedy. 她太疲惫和忧伤了，不想谈论那场悲剧。

Blank Filling (选词填空，填对应字母)A. frankB. narrowed downC. fadingD. dreadE. welfareF. gloriousG. interferenceH. communityI. dumbJ. came overK. juniorL. at any rateM. schemesN. constant O. typicalP. hand down1. Many animals face extinction (灭绝) as the result of human ____________.2. Her hope of her husband's return is as years go by.3. Having worked for three years, Roger decided to enroll on an MBA program and _ his choice to three famous universities on the East Coast.4. A _ reply is much more appreciated than beating about the bush (转弯抹角).5. Harold is always coming up with these dumb _ for making money that just get us into trouble.6. Call me, write to me, email me; _______, let's keep in touch.7. The view that you should never spend more than you earn is fairly _ of people of their generation.8. The artists stood before the paintings almost with astonishment at their beauty.9. In 1963, after his year in high school, Clinton was elected into a government study program for young people in Washington, D. C.10. William Byrd composed many pieces of music, but his Latin church music is considered his most _ work.11. Governments establish systems to provide a safety net to prevent people from suffering the effects of poverty.12. You quit that respectable, well-paid job for this unpromising one? What ____________ you?