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【简答题】
Please decide which sentences are spoken by the Reservationist (R), which by the Guest (G) . If the sentence is said by the reservationist, write "R", if said by the guest, write "G". 1. ______ What kind of room would you like (prefer), a single room or a double room? 2. ______ From July 25 to July 27, for three nights. 3. ______ Good morning, Hilton Hotel. What can I do for you? 4. ______ A double room, please. 5. ______ May I have your name and your telephone number? 6. ______ From which date and for how many nights? 7. ______ Could you please hold on? I’ll check our vacancies for those days, (after a while) Yes, sir. We do have a double room for those days. 8. ______ OK. What’s the rate/How much does that cost? 9. ______ Yes, my name is Bruce and my telephone number is 27854466. 10. ____ I’d like to confirm your reservation. A double room for Mr. Bruce at 120 U>S> dollars per night from July 25 to July 27. Is that correct?
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参考答案:
举一反三
【单选题】采用谐波消去法的三相桥式PWM逆变电路,在输出电压的半个周期)个特定频率的谐波。 A.4 B.5 C.10 D. 11
A.
选择1
B.
选择2
C.
选择3
D.
选择4
【判断题】非线性环节的存在会影响控制系统的特性,因此不希望系统中存在非线性环节。
A.
正确
B.
错误
【多选题】【多选】下列图形中一定是平面图形的有( )
A.
三角形
B.
四边形
C.
平行四边形
D.
梯形
E.
【判断题】化学势判据就是 Gibbs自由能判据
A.
正确
B.
错误
【单选题】在空间,下列命题中正确的是(  )
A.
对边相等的四边形一定是平面图形
B.
有一组对边平行的四边形一定是平面图形
C.
四边相等的四边形一定是平面图形
D.
有一组对角相等的四边形一定是平面图形
【判断题】化学势判据就是Gibbs自由能判据
A.
正确
B.
错误
【单选题】采用谐波消去法的三相桥式PWM逆变电路,在输出电压的半个周期内,器件开通和关断各5次(不包含0和π时刻),则一共可以消除( )个特定频率的谐波。
A.
4
B.
5
C.
10
D.
11
【简答题】A.Lend Marsha some reference materials. B.Ask Marsha where the bookshelf is. C.Check through the books on Marsha's shelf. D.Ask Marsha if she has an extra bookshelf.
【简答题】根据打印机工作原理,目前市场上的打印机可分为哪三类?
【单选题】________ conscious of her moral obligations as a citizen。
A.
Marsha was and always will be
B.
Marsha has to be and always will be
C.
Marsha had been and will always be
D.
Marsha has been and will always be
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