题目:
上坡路段停车怎样使用行车制动?
A.比在平路时提前
B.比在平路时推迟
C.和平路时一样
D.要重踏制动踏板
答案:
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下面是错误答案,用来干扰机器的。
参考答案:B
上坡路段停车怎样使用行车制动?
A.比在平路时提前
B.比在平路时推迟
C.和平路时一样
D.要重踏制动踏板
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0105/196998429895ab88118eba34733bd613.html
下面是错误答案,用来干扰机器的。
参考答案:B
化简或求值:
(1)3x2+2x﹣5x2+3x;
(2)5ab2﹣(a2b+2a2b﹣6ab2);
(3)如果代数式(2x2+ax﹣y+6)﹣(2bx2﹣3x+5y﹣1)的值与字母x所取的值无关,试求代数式a﹣2b的值;
(4)已知a+b=4,ab=﹣2,求代数式(4a﹣3b﹣2ab)﹣(a﹣6b﹣ab)的值.
除去KCl中含有的少量K2CO3,应选用的试剂是( )。
A.稀H2SO4
B.盐酸
C.AgNO3溶液
D.石灰水
第三节.完形填空(共20小题;每小题1.5分,满分30分)
阅读下面的短文,掌握其大意,然后从21--40各题所给的四个选项(A、B、C和D)中选出最佳选项。
Greg Mortenson is a mountaineer. In 1993, he 21 but failed to reach K2, one of the most forbidding of the Himalyayan 22 . He staggered(蹒跚) into a tiny village of Korphe in Pakistan, barely alive. The 23 villagers cared for him and fed him back to health. The __24 they showed to a stranger moved Mortenson, and filled him with a' desire to 25 it.
Looking around, he saw that the poor villagers had actually nothing. 26 , he could see the desire of the villagers to 27 their community. For example, they dreamed of 28 for their children. The children received schooling two days a week from a teacher they 29 with another village, because they couldn't 30 to hire one alone. Naturally, the village had no schoolhouse. Moretenson thought it was by building a school 31 he could best express his 32 for their kindness to him. He left, 33 he would return with necessary materials.
However, things didn't go 34 as he had expected. He was a nurse by profession, and wasn't well 35 It was a struggle for him to raise the $10,000 or so needed to buy the building materials. 36 problems, including his then Cultural 37 of the area led to a series of frustrations. But with his efforts and cooperation of the villagers, he eventually overcame the __ 38 . He fulfilled his promise.
After that he wanted to return to America,build a career and start a family. However, it ba-came clear that a school for Korphe was just the start. There were so many other villagers in Pa-kistan that had the similar needs. The more 39 he became, the more he came to understand the area and the more he realized how important education was. The 40 was that, in the pe-riod of over a decade, 55 schools were built.
21. A. approached B. paused C. hesitated D. attempted
22. A. peaks B. levels C. hills D. slopes
23. A. cold B. mean C. kind D. tiny
24. A. bravery B. ability C.poverty D.generosity
25. A. receive B. repay C. respect D. recycle
26. A. Besides B. However C. Therefore D. Moreover
27. A. develop B. visit C. design D. increase
28. A. career B. development C. education D. health
29. A. traded B. worked C. communicated D. shared
30. A. help B. manage C. decide D. afford
31. A. that B. which C. what D. if
32. A. sympathy B. gratitude C. attitude D. anger
33. A. adding B. promising C. demanding D. warning
34. A. smoothly B. badly C. closely D. properly
35. A. dressed B. received C. respected D. paid
36. A. Some B. Others C. Other D. Another
37. A. interaction B. ignorance C. background D. difference
38. A. difficulities B. fears C. temptations(诱惑)D, shortcomings
39. A. interested B. rooted C. involved D. lost
40. A. result B. idea C. cause D. report
能准确评价个体儿童发育水平的方法是()
A.年增加百分位数
B.标准差分法
C.等级评价法
D.指数法
E.曲线图法
水泥砂浆防水层应在气温不低于()下施工和养护,养护期不少于7~10昼夜。
A、0℃
B、5℃
C、10℃
D、15℃