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【简答题】
阅读理解。 Mrs Read lives in the countryside. She is very happy. Sometimes she is not happy. There aren't many things to buy in the countryside. She needs to go to the city. One day she goes to the city. First she buys some fruits and vegetables for herself and for her friend. The she goes into a shop. She wants to buy a pair of glasses. She tries one pair, and then another, and another, but none of them seems to feel right. The shopkeeper is a nice man. After some time he says to Mrs Read, 'Don't worry, madam. Everything will be all right in the end. It isn't easy to find the right glasses.' 'No, it isn't,' answers Mrs Read. ' And it is even more difficult when you are shopping for a friend.' 1. Why does Mrs Read go to the city ? A.To visit a friend . B.There aren't many things to buy in the countryside. C.She needs to see a doctor. D.She loves the city. 2. Mrs Read buys ____ when she gets to the city . A. some fruits B. some vegetables C. nothing D. fruits and vegetables 3. Then she goes into a shop to buy a pair of ______. A. glasses B. shoes C. trousers D. jeans 4. It is not easy to for Mrs Read to _________. A.find the shop B. try on the glasses C.find the right glasses D. talk to the shopkeeper 5. The glasses are really for______. A. Ms Read herself B. her friend C. her son D. her students
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举一反三
【单选题】下列关于过栅流速的说法中哪一项是错误的?
A.
过栅流速太大,容易把需要截留下来的软性栅渣冲走
B.
过栅流速太小,污水中粒径较大的粒状物质有可能在栅前渠道内沉积
C.
过栅流速过低时,应通过减小投入工作的格栅台数,是过栅流速提升到所要求的范围内
D.
过栅流速过高时,应通过减小投入工作的格栅台数,使过栅流速降低到所要求的范围内
【单选题】共射放大电路的输出信号与输入信号的相位关系( )
A.
相同
B.
相反
C.
与原输入信号的相位有关
【简答题】过栅流速的调整控制可通过 格栅的工作台数来控制过栅流速。A. 开、停
【单选题】共射放大电路的输出信号与输入信号的相位关系( )
A.
相同
B.
相反
C.
与原输入信号的相位关
【单选题】共射放大电路的输出信号与输入信号的相位关系( )
A.
相同
B.
相反
C.
与原输入信号的相位有关
D.
与输出电容有关
【简答题】为什么要控制过栅流速?如何控制?
【简答题】简述控制 过栅流速的原因?及其控制方法。
【判断题】共射放大电路的输出信号与输入信号相位相同。
A.
正确
B.
错误
【单选题】下列关于过栅流速的说法中哪一项是错误的?()
A.
过栅流速太大,容易把需要截留下来的软性栅渣冲走
B.
过栅流速太小,污水中粒径较大的粒状物质有可能在栅前渠道内沉积
C.
过栅流速过低时,应通过减小投入工作的格栅台数,使过栅流速提升到所要求的范围内
D.
过栅流速过高时,应通过减小投入工作的格栅台数,使过栅流速降低到所要求的范围内
【判断题】共射基本放大电路的输出信号与输入信号同相位。
A.
正确
B.
错误
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