[单选题]《行规》第81条：进站（接车进路）或出站（发车进路）信号机因-我要搜题网

[多选题]根据《建设工程安全生产管理条例》,下列( )达到一定规模的危险性较大的分部分项工程编制专项施工方案,并附具安全验算结果,经施工单位技术负责人、总监理工程师签字后实施,由专职安全生产管理人员进行现场监督。
A. 基坑支护与降水工程
B. 土方开挖工程
C. 模板工程
D. 混凝土工程
E. 脚手架工程

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[填空题]Directions: In this section, you will hear a passage three times. When the passage is read for the first time, you should listen carefully for its general idea. When the passage is read for the second time, you are required to fill in the blanks numbered from 26 to 33 with the exact words you have just heard. For blanks numbered from 34 to 36 you are required to fill in the missing information. For these blanks, you can either use the exact words you have just heard or write down the main points in your own words. Finally, when the passage is read for the third time, you should check what you have written.
The Director of the Future of Life Research Centre—David Hunter Tow—forecasts a major surge in the creation of 1 life forms and commercial applications following the announcement of the creation of the first[ 2 life form; but with an 3 and irreversible impact on human evolution with the eventual emergence of Meta-life.
0The first artificial life form has been 4 by human biological life. Humans have crossed the rubicon of creation by bypassing natural 5 and by designing the first artificial life form, have 6 the floodgates of life’s evolutionary future~ Craig Venter and his team were the first scientists to 7 the human genome and have now created the first artificial life-form; a tiny new bacterium or synthetic cell, controlled by human engineered DNA, with its genetic 8 determined by human life. The scientists have made a synthetic copy of the genome of a bacterium—Mycoplasma mycoides. This man-made genome was then transplanted into a related bacterium—Mycoplasma capricolum. This process "rebooted" the cell 9 .The cell has since divided more than a billion times. 10 , generating synthetic bacteria capable of cleaning up pollution, producing new forms of green chemicals and fuels on of 15 years of research, costing more than $ 47 million. But the cost is miniscule in comparison with its glittering potential benefits. It 11 , capturing CO₂ in designed algae and providing vaccines against disease.

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[简答题]A．条件(1)充分，但条件(2)不充分。
B．条件(2)充分，但条件(1)不充分。
C．条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分。
D．条件(1)充分，条件(2)也充分。
E．条件(1)和(2)单独都不充分，条件(1)和条件(2)联合起来也不充分。
|a|-|b|=|a-b|．
(1)ab≥0； (2)ab≤0．

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[判断题]维规->维规-会议通信
A.正确
B.错误

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[简答题]新形势下从国家层面建立健全香港特别行政区维护国家安全的法律制度和执行机制工作的基本原则是?

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[单选题]通过将真人民币挖补、涂改、剪贴、拼凑、揭页等手段制成的人民币，属于（）。
A.伪造人民币
B.变造人民币
C.残缺人民币
D.污损人民币

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[多选题]煤矿安全生产管理工作中,人们常说反“三违”。“三违”行为是指( )。
A.违章指挥
B.违反道德
C.违章作业
D.违反劳动纪律

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[多选题]下列( )情形下,劳动合同无效或者部分无效。
A.以欺诈、胁近的于段或者乘人之危,使对方自让肯真实意息的情况下签订或者变更劳动合同的
B.用人单位免除自己的法定责任、排除劳动者权利的
C.违反法律、行政法规强制性规定的

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[单项选择]下列叙述中，哪一条是不正确的（）
A. 一个二维表就是一个关系，二维表的名就是关系的名
B. 关系中的列称为属性，属性的个数称为关系的元或度
C. 关系中的行称为元组，对关系的描述称为关系模式
D. 属性的取值范围称为值域，元组中的一个属性值称为分量

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[单项选择]If you are writing or studying, it makes very much difference where the light comes from. People who use books and pens every day (41) to be especially careful about the direction from which the light shines on their work.[A] over [B] around [C] off

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[单项选择]男性，42岁，双髋关节疼痛2年，加重3个月，并出现跛行，有服用激素和外伤史。为了更好的使患者康复，下列哪项措施最为有利（）
A. 术后早期下地活动
B. 术后早期采用膝关节功能康复器
C. 术后石膏固定3个月
D. 术后定期进行高压氧和活血化瘀治疗
E. 术后早期采用活血化瘀治疗

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[简答题]

某项目施工需进行气焊，气焊工作中需用乙炔发生器、乙炔瓶、氧气瓶和焊割工具。

针对该进行气焊的危险源管理上应采取的措施有哪些？

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[多选题]Linux中，文本和图形界面来回切换的键是（）。
A.A、
B.B、
C.C、
D.D、
E.E、

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[单选题]有重物悬在空中时，禁止驾驶人员（）或做其他工作。
A.离开驾驶室
B.检查重物
C.检查捆绑牢固
D.熄火休息

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[单项选择]水在圆管中强制湍流时的对流传热系数α_i为1000W/（m²℃），若将水的流量增加一倍，而其它条件不变，则α_i为（）。
A. 2000
B. 1740
C. 1000
D. 500