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完形填空。 There are robots all around us. Some do very 1 jobs like flying airplanes and driving subway trains. And some do simple jobs. When an automatic washing machine 2 , water goes in. The machine waits until the water is hot 3 washing the clothes. It does this by 'feedback' (反馈). Information about what's 4 is 'fed back' into the robot to tell it 5 next. Our eyes, ears and other senses (感官) are 6 feedback. They tell us 7 round us. So robots are like people in 8 ways. They work and they have feedback. But 9 robots look like people. Many are 10 ways. Robots control (控制) the temperature of our houses, our cookers, our hot water systems. We can 11 the controls to the temperature we want. The robot does 12 . Its feedback usually come 13 thermostat (自动调温器). Our kind of thermostat is a strip of metal (金属条), which bends (弯曲) when it gets hot. At the right temperature, it bends just enough 14 a switch. This turns off the heat. As the air around it gets 15 , the metal gets straight, and this turns the heat on again. (     )1. A. easy (     )2. A. is switched on (     )3. A. after (     )4. A. happening (     )5. A. how to do (     )6. A. we (     )7. A. what will happen (     )8. A. some (     )9. A. many (     )10. A. hide (     )11. A. set (     )12. A. something (     )13. A. up (     )14. A. to work (     )15. A. cold B. simple B. is switched B. before B. happens B. what to do B. our B. what’s happening B. any B. a lot of B.  to hide B.  setting B. something other things B. to B. working B. hot C. different C. is switching C. as soon as C. to happen C. what to do it C. us C. to happen what C. two C. very few C. hidden C. to set C. half the work C. from C. to working C. cool D. difficult D.  switches on D. while D. happened D. to do what D. they D. something will happen D. three D.  a little D. hiding D. sets D. the rest D. in D. works D. warm
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【单选题】中华文化源远流长、博大精深的一个重要原因在于它所特有的包容性。下列选项对中华文化的“包容性”理解正确的是() ①既求同存异又兼收并蓄 ②能吸收、借鉴其他国家、民族的各种文化 ③能与其他各民族文化平等交流、和睦相处; ④有利于中华文化融合其他民族的文化,消除差异
A.
①③
B.
②④
C.
①④
D.
②⑨
【单选题】窝沟封闭成功的关键是
A.
清洁牙面要彻底
B.
酸蚀时间要充足
C.
酸蚀剂量要适当
D.
酸蚀剂要冲洗干净
E.
封闭前保持牙面的干燥,不被唾液污染
【简答题】某电力系统网络如下图所示,节点1和节点2的发电机用各自的等效电流源和相应电抗(标幺值,基准功率为100MVA)表示。在π模型线路中,串联电抗和并联电容的值标注在图中(阻抗为标幺值,基准功率为100MVA)。连接在节点3和节点4的负载功率单位为MW和Mvar。试求:
【单选题】作为人类社会特有的一种社会现象,道德是人类社会发展到一定阶段的()
A.
必然产物
B.
必然结局
C.
必然意识形态
D.
统治阶级上层建筑
【单选题】若取相电压基准值为额定相电压,则功率标幺值等于()。
A.
线电压标幺值
B.
电流标幺值
C.
电流标幺值的根三倍
D.
线电压标幺值的根三倍
【判断题】功率因数定义为无功功率与视在功率的比值。
A.
正确
B.
错误
【单选题】中华文化源远流长、博大精深的一个重要原因在于它所特有的包容性。下列选项对中华文化的“包容性”理解正确是() ①既求同存异又兼收并蓄 ②能吸收借鉴其他国家、其他民族的各种文化 ③能与其他各民族文化平等交流、和睦相处 ④有利于中华文化同化其他各民族的文化,消除差异
A.
②③
B.
①③
C.
②④
D.
①④
【多选题】以下对荷兰式拍卖的说法正确的有
A.
竞买人需要决定在什么时候应价
B.
竞买人需要决定在什么价位应价
C.
竞买人之间存在着看不见的竞争关系
D.
它是一种价格下行的拍卖方式
E.
它又被称为“减价拍卖”
【单选题】窝沟封闭成功的关键是
A.
清洁牙面要彻底
B.
酸蚀时间要足
C.
酸蚀剂量要适当
D.
酸蚀剂要冲洗干净
E.
封闭前保持牙面干燥,不被唾液污染
【多选题】短路电流计算采用标幺值法时,正确的是()。
A.
标幺值电流可代替标幺值容量
B.
位于不同电压等级的阻抗可以用统一的基准电压来计算阻抗的标幺值
C.
相电压和线电压的标幺值相同
D.
单相功率和三相功率的标幺值相同
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