From Richard Halliburton’s Complete
Book of Marvels it was said that about a hundred years ago the people of London
were amazed to see an extraordinary boat come sailing up the Thames River, which
was famous in the world. The boat had four- cornered sails made of mats(帆), big
wooden eyes in the bow(船首), and fantastic pictures on the stern(船尾). The boat that surprised the Londoners turned out to be the Keyling, an eighty - foot junk from Foochow in distant China. The junk had A. people who were only good at trade. B. famous sailors. C. people who were not accustomed to seas and ships. D. people who were skillful in boat -building. [判断题]运营分公司劳动防护用品佩戴人员应正确佩戴、妥善保管,不得故意损坏,可以转赠他人或用于其他用途。
A.正确 B.错误 [单选题]人员轻伤10人以上属于( )类。
A.一般事故A B.一般事故B C.一般事件A D.一般事件B [单选题]在电气化区段高柱信号机上作业时应保持人身和携带物件与接触网带电部分( )以上距离。
A.2 m B.2、5 m C.1 m D.2、8 m [填空题]
Mobile Phones Mobile phones should carry a label if they proved1 to be a dangerous source of radiation, according to Robert Bell, a scientist. And no more mobile phone transmitter towers should be built until the long-term health effects of the electromagnetic radiation they emit are scientifically evaluated, he said. "Nobody’s going to drop dead overnight but we should be asking for more scientific information," Robert Bell said at a conference on the health effects of low-level radiation. (46) A. report widely circulated among the public says that up to now scientists do not really know enough to guarantee there are no ill-effects on humans from electromagnetic radiation. According to Robert Bell, there are 3.3 million mobile phones in Australia alone and they are increasing by 2,000 a day. (47) As well, there are 2,000 transmitter towers around Australia, many in high density residential areas. [单项选择]关于药物pKa下述哪种解释正确?
A. 在中性溶液中药物的pH值 B. 药物呈最大解离时溶液的pH值 C. 是表示药物酸碱性的指标 D. 药物解离50%时溶液的pH值 E. 是表示药物随溶液pH变化的一种特性 [单选题]-B-001 3 2 3
所谓重物下滑,是指升降机构制动器在制动时,被吊物件( )。 A.坠滑落地 B.滑落地面 C.滑行距离过长 [T/] [单项选择]属于建立防护外照射的基本方法是
A. 屏蔽防护 B. 个人剂量限制 C. 防护水平最优化 D. 合理降低个人受照剂量 E. 合理降低全民检查频率 [多选题]电费管理工作主要有( )统计分析等几个环节。
A.A.电价 B.B.票据 C.C.台账 D.D.电费 [判断题]DS864为三相二元件有功电能表。
[单选题]三辆水罐消防车出五支水枪操操作程序:( )迅速按水罐消防车双干线出三支水枪操实施战斗展开,( )占据另一处水源向1号车实施供水,( )单独占据一处水源按水罐消防车单干线出两支水枪操实施战斗展开。
A.1号车、2号车、3号车 B.1号车、3号车、2号车 C.3号车、2号车、1号车 D.2号车、3号车、1号车 [单项选择]负责高技术产业中涉及生物医药的规划、政策标准拟订的政府部门是()
A. 国家工商行政管理总局 B. 国家发展与改革委员会 C. 工业和信息化部 D. 商务部 E. 国家中医药管理局 我来回答: 提交
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