题目内容
起动他励直流电动机时，磁路回路应（）电源。
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直流电动机的起动方法有（）和()两种
直流电动机反转通常采用改变电枢电流方向来实现。
Choose a situation to form a dialogue. You can edit it yourself, or learn from the text on the PPT. Read it fluently, and then upload the recording.
Reading the following dialogue and write T(Ture) or F(false) in the blanks below.(B：Betty M: Man. The opening day of the two-day conference has arrived. Betty is at the registration desk to welcome visitors)B:Good morning. Are you here to register for the conference?M: Actually, I have already pre-registered for the event.B:May I have your name, please?M: Sure, It's Anders.B:Excuseme, is that your surname or your given name?M:It's my last name. My first name is Lance.B:Mr. Anders... oh, yes, I see your name on the list. Here is our information package.M: Thanks. I'm most interested in the speech by william Rutherford,B:Yes, that should be an excellent presentation. Let me just check on the details for you...OK, it's at 2 p.m. in Ballroom C.M:Where can I find Ballroom C?B:It's very easy to find. You just go up the stairs on your left, and it's the second set of doors on your right.M:Thank you for all your help.B:My pleasure, Mr, Anders. I hope you enjoy the conference.________ 1. The man's family name is Lance.________ 2. The man registered for the conference in advance.________ 3. The man asks Betty where William Rutherford is from.________ 4. Betty didn't know where is Ballroom C.________ 5. The man will later go upstairs.
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