(判断题)14: 磁吹式灭弧装置灭弧能力最强。 A: 错误 B: 正确 ...

(判断题)8: 电力拖动系统中的过载保护和短路保护仅仅是电流倍数的不同。              （） A: 错误 B: 正确 ...

(判断题)2: 异步电动机的气隙不是均匀的。 A: 错误 B: 正确 ...

(单选题)18: 116. All the tasks _____ ahead of time, they decided to go on holiday for a week. A: had been fulfilled B: were fulfilled C: having been fulfilled D: been fulfilled ...

(单选题)12: 46. After criminals were caught, they were accused and put on ______. A: death B: sentence C: punishment D: trial ...

(单选题)6: 5. They have no ______ wish ______ to live and work for their motherland. A: same … as B: such … as C: other … than D: another … than ...

(单选题)16: 80. I doubt whether he can _______ his efforts much longer as he looks very tired. A: hold up B: hold on C: keep on D: keep up ...

(单选题)10: 28. Neither your parents nor your aunt has any ______ thought but what is best for you. A: other B: another C: more D: extra ...

(单选题)4: 66. It is reported that two cars ______ into each other this morning on the highway, killing both drivers and two passengers. A: crawled B: crouched C: pressed D: crashed ...

(单选题)20: 75. The president could not go to the meeting, so Mr. Smith ______ him. A: recorded B: renewed C: represented D: recalled ...