【单选题】【消耗次数：1】
If I [填空]the time, Id make something better.
①
has
②
had
③
have
④
having
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Tom: It’s the most delicious fruit I have had a long time.
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I’m so glad you like it.
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You are not hungry now.
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I like eating this fruit, too.
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You should like it.
【单选题】
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A: Id love to, but Ill have something important to do then. B: What a pity!
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正确
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随机题目
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正确
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错误
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并励直流发电机的电磁功率<imgwidth="49"height="50"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD34413.png">与输出功率<imgwidth="40"height="50"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD34526.png">之差等于（）
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②
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<imgwidth="54"height="54"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD35103.png">+<imgwidth="57"height="54"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD35212.png">
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同时为正弦波
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不会同时为正弦波
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①
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②
<imgalt=""src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191205/20191205100349_854.png"/>=常数，<imgalt=""src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191205/20191205101424_297.png"/>
③
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①
<imgwidth="87"height="43"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD29371.png">
②
<imgwidth="134"height="43"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD29492.png">
③
<imgwidth="134"height="43"src="http://wljy.whut.edu.cn:80/uploadfiles/word/DJYTFD.files/DJYTFD29611.png">
【单选题】
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①
相对定子边磁动势<imgalt=""src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191205/20191205101305_33.png"/>静止
②
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③
相对转子静止