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【简答题】
将( )用电气方式集中控制与监督,并实现它们之间联锁关系的技术方法和设备称为电气集中联锁。
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【简答题】天津在支援四川德阳地区抗震救灾活动中，一辆满载物资的总重为G牛顿的运输车，将物资沿ABCD路线运至D处，AB段海拔高度为h 0 米，CD段海拔高度为h 2 米，如图甲所示。在整个运输过程中，汽车以恒定速度v米／秒运动，汽车t=0时经过A处，t 1 时经过B处，t 2 时经过C处，在此过程中汽车牵引力功率P随时间，变化的图象可简化为图乙所示（P 1 、P 2 、t 1 和t 2 也为已知量）。 （1...
【单选题】甲、7,N列火车长度之比为3：2，运行速度之比为2：3。当它们在平行的轨道上相向而行时．从两车头相遇到两车尾相离需要10秒；已知甲火车通过一座1300米的大桥需要80秒，问乙火车通过这座桥需要多长时间?
A.
60秒
B.
55秒
C.
50秒
【简答题】Fill in the blanks. 根据提示将单词补充完整。 1. A: W (谁) is it? B: It's me. 2. L (看)! I see a big brown cow! 3. What is the girl doing n (现在)? 4. Kim doesn't s (睡觉). She is laughing. 5. A: What are you doing...
【简答题】汉译日 下午几点来学校?
【单选题】关于非居民纳税人，下列说法正确的是( )。
A.
在中国境内无住所又不居住或者无住所而在境内居住不满六个月的个人，从境内取得的所得，依照税法规定须缴纳个人所得税
B.
在中国境内无住所又不居住或者无住所而在境内居住不满1年的个人，从境内取得的所得，依照税法规定须缴纳个人所得税
C.
在中国境内无住所又不居住或者无住所而在境内居住不满1年的个人，从境内取得的所得，依照税法规定无须缴纳个人所得税
D.
在中国境内无住所又不居住或者无住所而在境内居住不满六个月的个人，从境内取得的所得，依照税法规定无须缴纳个人所得税
【简答题】短文填空 从中选词并用其适当形式填空完成短文。 difficult, set up, cheer, feel, change, raise, train, tell, show, carry Dear Miss Yang, I’d like to thank you for__1___ money for Animal Helpers, a group that was__2___ to help...
【单选题】What is Dave's purpose in comparing Americans losing jobs after the import of Japanese televisions with doctors losing jobs after the disappearance of all disease?
A.
To suggest that maybe one day America will lose all those high-paying doctor and health care jobs.
B.
To show that Americans losing the jobs of producing televisions is the same as doctors losing their jobs.
C.
To justify that losing the jobs of producing televisions can also make America better off.
D.
To stress the importance of importing cheaper televisions from Japan to make Japan better off.
【简答题】甲、乙两名自行车爱好者准备在一段长为3500米的笔直公路上进行比赛，比赛开始时乙在起点，甲在乙的前面，他们同时出发，匀速前进，已知甲的速度为12米/秒，设甲、乙两人之间的距离为s（米），比赛时间为t（秒），图中的折线表示从两人出发至其中一人先到达终点的过程中s（米）与t（秒）的函数关系，根据图中信息，回答下列问题： （1）乙的速度为________米/秒； （2）当乙追上甲时，求乙距起点多少米； ...
【单选题】What is Dave's purpose in comparing Americans losing jobs after the import of Japanese televisions with doctors losing jobs after the disappearance of all disease?
A.
To suggest that maybe one day America will lose all those high-paying doctor and health care jobs.
B.
To show that Americans losing the jobs of producing televisions is the same as doctors losing their jobs.
C.
To justify that losing jobs of producing televisions can also make America better off.
D.
To stress the importance of importing cheaper televisions from Japan to make Japan better off.
【单选题】What is Dave’s purpose in comparing Americans losing jobs after the import of Japanese televisions with doctors losing jobs after the disappearance of all disease?
A.
To suggest that maybe one day America will lose all those high-paying doctor and health care jobs.
B.
To show that Americans losing jobs of producing televisions is the same as doctors losing their jobs.
C.
To justify that losing the jobs of producing televisions can also make America better off.
D.
To stress the importance of importing cheaper television from Japan to make Japan better off.
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