It sounds like a science fiction, but
researchers say it’s a scientific fact: Microscopic organisms dubbed "killer
algae" are paralyzing fish with unknown toxins and then eating away at their
flesh. {{U}}They{{/U}} might be making people sick, too. The name given to this single-cell organism, or dinoflagellate, is Pfiesteria piscimorte—{{U}}literally{{/U}}, "fish killer." It was discovered at North Carolina State University in 1988, but at the same time, few scientists believed in its existence, much less in its highly unusual predatory nature. But ongoing research has led to international acknowledgment of the phenomenon and, recently, research funding. Seemingly {{U}}prompted{{/U}} by an unknown substance secreted by fish, the aggressive creature swims into action. It sends neurotoxins into the water and air, paralyzing a fish’s nervous syste A. stimulated B. attracted C. annoyed D. shocked [判断题]我国古代建筑的彩画共有三种,按等级从高到低排列依次为和玺彩画、苏式彩画和旋子彩画。()
A.正确 B.错误 [单项选择]职业病的防治监督检查中,安全监督管理部门的职责不包括()。
A. 对职业病防护设施设计卫生的审查和竣工验收 B. 组织指导、监督检查生产经营单位职业安全培训工作 C. 负责职业危害的申报 D. 组织查处职业危害事故和有关违法、违规行为 [简答题]什么叫工作接地与保护接地?
[单项选择]Consider a stock put option with the following characteristics: Type of option: put option on stock Underlying asset: 100 shares of Compaq Exercise price : $32.50 per share Premium : $4.00 per share Expiration date : November Expiration-day price of Compaq stock were $28.50 per share, which of the following would describe the expiration-day profit/loss for the investors in the Compaq put option
[单选题]以下心血管疾病中,最易引起咯血的是:
A.二尖瓣狭窄 B.肺动脉瓣狭窄 C.急性心包炎 D.三尖瓣狭窄 E.主动脉瓣狭窄 [单选题]格栅工艺参数中不包括( )。
A.格栅间隙 B.栅后流速 C.过栅流速 D.水头损失 [单项选择]Why has the Royal Academy of Arts been criticized
A. Because it hosted exhibitions of art work too often. B. Because it charged attendance fees for exhibitions. C. Because its approach to teaching was conservative. D. Because it enrolled too many students each year. [判断题]PCB上的导孔可用来焊接元器件引脚。
A.正确 B.错误 [判断题]以史为鉴、开创未来,必须团结带领中国人民不断为美好生活而奋斗。
A.正确 B.错误 [单选题]干粉灭火器的优点不包括_____。
A.灭火效力大 B.速度快 C.导电 [判断题]1551 电工刀可以用于带电作业。( )
A.正确 B.错误 [判断题]动车组越出站界调车,进站时司机采用调车(目视行车)模式。( )
A.正确 B.错误 [单项选择]有关全科医学的主旨说法正确的是()
A. 以群体为健康照顾主体 B. 以个体为健康照顾主体 C. 以人为中心、以家庭为单位 D. 以群体健康维护为方向 E. 以个体健康维护为方向 [单选题]钢丝绳插接的环绳或绳套,其插接长度应不小于钢丝绳直径的()倍,且不准小于()mm。
A.15;400 B.15;300 C.20;400 D.20;300 [单选题]对心肺复苏过程描述错误的是()
A.A.判断意识时应“轻拍高喊” B.B.应将伤病员翻成仰卧姿势,放在坚硬的平面上 C.C.手指离开胸壁,双臂伸直,上半身前倾,以髋关节为支点,垂直向下、用力、有节奏地按压。 D.D.按压深度在4~5cm,按压频率200次/min。 [单项选择]
A. 冬眠物理降温 B. 气管切开 C. 脱水治疗 D. 止血,预防感染治疗 E. 血肿清除术 [多选题] 一次性带负压吸引气管插管的侧方管道吸痰范围是( )
A. 气囊上方潴留物 B. 声门下方的潴留物 C. 气囊下方潴留物 D. 声门上方的潴留物 [多项选择]战略关联产业分类法可将产业分为( )。
A. 资源密集型产业 B. 劳动密集型产业 C. 主导产业 D. 先导产业 E. 瓶颈产业 [单项选择]标准麻花钻修磨横刃是把横刃磨短,磨短后长度为原来的。()
A. 1/2; B. 1/3~1/5; C. 1/10; D. 1/20。 [简答题]尾部烟道再燃烧的现象?
[单选题]电气线路工程中,电缆安装前进行检查实验,合格够进行敷设,对 1KV以上电缆应做的实验为()。
A.直流耐压实验 B.交流耐压实验 C.局部放电实验 D.500V摇表检测 [简答题]《行路难》(其一)的写作特点。
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