圆多面琢型的钻石在磨钻时的损耗率约为()。A.25-30% B.30-35% C.3

题型:单项选择题

问题:

圆多面琢型的钻石在磨钻时的损耗率约为()。

A.25-30%

B.30-35%

C.35-40%

D.40-45%

考点:钻石检验员考试钻石检验员考试题库
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运送爆炸材料时必须在提升前通知绞车司机和各水平把钩工注意,车辆运行速度不得超过()

A、3M/s

B、2M/s

C、1M/s

D、0.5M/s

题型:单项选择题

常用的衡量电信业务量不均匀性的指标有()。

A.年度不均匀系数

B.小时集中系数

C.日不均匀系数

D.小时不均匀系数

E.月不均匀系数

题型:单项选择题

按要求改写句子。

1. Mr Zhang needs some help. (改为一般疑问句) 

    _____ Mr Zhang _____  _____  help?

2. It's about ten kilometers away from here. (对画线部分提问) 

    _____ _____ is it from here?

3. He practices reading English. (用next Monday改写句子)

    He is _____ _____ _____ _____  English next Monday.

4. I called you last night. (对画线部分提问) 

    _____ _____ you call _____?

5. Last week I read an English book. (改为否定句)

    Last week I _____ _____  an English book.

6. There are few readers in the library. (改为反意疑问句)

    There are few readers in the library, _____ _____?

7. Mr Black is holding a lot of flowers. (对画线部分提问) 

    _____ _____ Mr Black _____?

8. Bob was born in England on May 19, 1988.(同上) 

    _____ _____ _____ was Bob born?

9. Jim is the tallest boy in his class. (改为同义句)

    Jim is _____ than _____ _____ boys in his class.

10. Mr li is going to visit his friend. (对画线部分提问) 

      _____ _____ Mr li _____ _____ _____?

题型:单项选择题

2006年9月24日,中 * * 政治局召开会议,决定对陈良宇严重违纪问题立案调查。2006年12月23日,中 * * 决定对杜世成的问题立案调查。中央一再强调,广大党员干部,特别是领导干部一定要牢固树立正确的世界观、人生观和价值观,常修为政之德,党思贪欲之害,常怀律已之心。这体现的哲理有:()

A.实践决定认识

B.改造客观世界的同时,也要加强对主观世界的改造

C.正确的思想意识能决定事物的发展

D.党员干部要始终以为人民服务为宗旨

题型:单项选择题

保湿层施工规定,当保湿层厚度超过( )mm时,应分为两层或多层逐层施工。

A.100

B.50

C.150

D.200

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