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【简答题】
I am an American student. My name is Vicky King. I have a big family. I have two brothers. They and I are in the same school. My grandma and grandpa live with us. They are my father’s parents. My father is from England, but my mother’s hometown is at the foot of the Great Wall of China. My brothers and I were all born in New York. Because my father works in a school in New York. He teaches English. People often ask us, “What do you like eating?” It is not easy to answer this question! Well, let me tell you. My grandpa has been to India, so he likes Indian food. My father likes hot dogs, potato chips and hamburgers. My mother likes rice, noodles and dumplings. She often does very nice Chinese food for us. So my brothers and I like Chinese food a lot but English food a little. We don’t like Indian food at all. 小题1:This is a family of_________ A.three B.five C.six D.seven 小题2:Her grandfather is __________. A.from England B.from China C.from India D.from America 小题3:Her father is a ________ A.worker B.doctor C.teacher D.player 小题4:Her mother likes Chinese food because she_________. A.has been to China B.is from China C.can do Chinese food D.knows her children like it 小题5:The three children like___________ food very much. A.Chinese B.English C.Indian D.American
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举一反三
【简答题】1 一台三相鼠笼式异步电动机技术数据为:P=320kW,U=6000V,=740r/mi,I=40A,Y接法,cosφ=0.83,KI=5.04,KT=1.93,λ=2.2,试求: (1) 直接启动时的启动电流与启动转矩; (2) 把启动电流限定在160A时,应串入定子回路每相电抗是多少?启动转矩是多大?
【单选题】三相鼠笼式异步电动机直接启动电流过大,一般可达额定电流的 ( ) 倍。
A.
2 ~ 3
B.
3 ~ 4
C.
4 ~ 7
D.
10
【单选题】下列不属于磁疗法的作用的是( )
A.
促进骨折愈合作用
B.
消炎消肿作用
C.
止泻作用
D.
止痛作用
E.
降低体温
【单选题】三相鼠笼式异步电动机采用Y-△启动时,启动电流是直接启动电流的( )倍。
A.
1
B.
1/2
C.
1/3
D.
1/4
【单选题】下列哪个不属于光纤通信系统?
A.
光放大器
B.
光接收机
C.
光发射机
D.
光滤波器
【单选题】下列哪个不属于光纤通信系统?
A.
光发射机
B.
光滤波器
C.
光放大器
D.
光接收机
【单选题】下列哪个不属于光纤通信系统?
A.
光发射机
B.
光接收机
C.
光滤波器
D.
光放大器
【单选题】篮球比赛中,主队前两节的进攻方向是记录台的()
A.
左边
B.
右边
【单选题】下列哪个不属于光纤通信系统?
A.
光接收机
B.
光滤波器
C.
光放大器
D.
光发射机
【简答题】(4a+3a 2 -3+3a 3 )-(-a+4a 3 ),其中a=-2.
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