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【单选题】
Word2003文档文件默认的扩展名是（）。
A.
TXT
B.
WPS
C.
DOC
D.
BMP
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参考答案：
举一反三
【单选题】Believe it or not, the number of indifferent (漠不关心的) passers-by ______ eighteen, and a large number of people ______ discussing the incident on the net. [     ]
A.
add up to; is
B.
add to; is
C.
adds up to; are
D.
adds to; are
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【简答题】逆变状态时()
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【单选题】变流器工作于有源逆变状态时
A.
α<90 度
B.
α=90 度
C.
α>90 度
D.
α=60 度
查看完整题目与答案
【单选题】John Smith, a successful businessman, has a ______ car.
A.
large German white
B.
large white German
C.
white large German
D.
German large white
查看完整题目与答案
【多选题】晶闸管变流电路工作在逆变状态时，造成逆变失败的主要原因有（）。
A.
晶闸管损坏
B.
触发脉冲丢失
C.
快速熔断器烧断
D.
逆变角β太小
E.
负载太重
查看完整题目与答案
【简答题】Jane has got a large (collect) ______ of stamps.
查看完整题目与答案
【简答题】The company has retail services on a large scale.
查看完整题目与答案
【简答题】The growth of motorcycle use has been especially large in ______.
查看完整题目与答案
【单选题】变流器在逆变状态时,控制角α必须在( )
A.
0°~90°
B.
30°~120°
C.
60°150°
D.
90°~150°
查看完整题目与答案
【单选题】变流器工作在逆变状态时,控制角 α 必须在
A.
0°-90°
B.
30°-120°
C.
60°-150°
D.
90°-150°
查看完整题目与答案
相关题目：
【单选题】Believe it or not, the number of indifferent (漠不关心的) passers-by ______ eighteen, and a large number of people ______ discussing the incident on the net. [     ]
A.
add up to; is
B.
add to; is
C.
adds up to; are
D.
adds to; are
查看完整题目与答案
【简答题】逆变状态时()
查看完整题目与答案
【单选题】变流器工作于有源逆变状态时
A.
α<90 度
B.
α=90 度
C.
α>90 度
D.
α=60 度
查看完整题目与答案
【单选题】John Smith, a successful businessman, has a ______ car.
A.
large German white
B.
large white German
C.
white large German
D.
German large white
查看完整题目与答案
【多选题】晶闸管变流电路工作在逆变状态时，造成逆变失败的主要原因有（）。
A.
晶闸管损坏
B.
触发脉冲丢失
C.
快速熔断器烧断
D.
逆变角β太小
E.
负载太重
查看完整题目与答案
【简答题】Jane has got a large (collect) ______ of stamps.
查看完整题目与答案
【简答题】The company has retail services on a large scale.
查看完整题目与答案
【简答题】The growth of motorcycle use has been especially large in ______.
查看完整题目与答案
【单选题】变流器在逆变状态时,控制角α必须在( )
A.
0°~90°
B.
30°~120°
C.
60°150°
D.
90°~150°
查看完整题目与答案
【单选题】变流器工作在逆变状态时,控制角 α 必须在
A.
0°-90°
B.
30°-120°
C.
60°-150°
D.
90°-150°
查看完整题目与答案
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