热动力

型号S19H-16表示阀门名称（）

A、浮桶式疏水阀

B、公称压力为1Mpa的热动力式疏水阀

C、公称压力为1.6Mpa的热动力式疏水阀

D、公称压力为2.5Mpa的热动力式疏水阀

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疏水阀的种类较多，有热动力型疏水阀、浮力式疏水阀和热膨胀型疏水阀等。属于热动力型疏水阀的是（）。

A、浮球式疏水阀

B、脉冲式疏水阀

C、双金属片式疏水阀

D、热动力式疏水阀

E、吊筒式疏水阀

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热动力疏水阀应安装在()官道上。
A.热水
B.排潮
C.蒸汽
D.凝结水
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（2014年真题）热动力疏水阀应安装在（）管道上。 A.热水B.排潮C.蒸汽D.凝结水
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室内疏水器一般选用(　　)疏水器。

  • A分离式

  • B浮动式

  • C膨胀式

  • D热动力式

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[单选]热动力式疏水器由阀体、阀座、阀片、阀盖、阀帽及（）组成。
A．旋塞
B．手轮
C．过滤网
D．阀盘
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混合食物的特殊热动力作用占基础代谢的百分比是（　　）。

A、4%～5%

B、5%～6%

C、10%

D、30%

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实际工程中应用较多的疏水器类型是()。

A.浮筒式

B.热动力式

C.波纹管

D.倒吊桶式

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[单选]热动力式疏水器的安装优点是：可以（）。
A．水平安装
B．竖直安装
C．水平向下45度角安装
D．各种方向安装
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疏水阀常见的有（）。

A、凝液、排除器

B、阻汽排水器

C、钟型浮子式、热动力式、脉冲式

D、疏水器

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疏水器种类很多，常见的有热动力式、钟形浮子式、脉冲式、热膨胀式、浮球式和浮桶式等等。

A、对

B、错

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热动力球疏水阀是利用蒸汽和水的热力性质的不同使阀片直接开启或关闭，达到排水阻汽目的。

A、对

B、错

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（判断题）疏水器种类很多，常见的有热动力式、钟形浮子式、脉冲式、热膨胀式、浮球式和浮桶式等等。

A对

B错

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热动力型疏水器是利用蒸汽与凝结水的热力学特性的不同的原理来（）。

A、疏水的

B、排气的

C、减压的

D、保压的

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混合动力汽车是指同时装备两种动力来源：热动力源与____的汽车。
A.磁动力源
B.电动力源
C.风动力源
D.重力源

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阀门安装中，哪种说法错误（）。 

A、减压阀应垂直安装

B、溢流阀应垂直安装

C、单向阀只能水平安装

D、热动力式疏水阀可在任意位置管道上安装

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[单选]热动力式疏水器具有结构简单，维修方便，动作灵敏可靠，适用于中、高压管道上，不适用于压力低于（）的蒸汽管道。
A．0.049MPa
B．0.5MPa
C．1.0MPa
D．1.5MPa
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下列句子不是比喻句的是()A:因此，人们把南极叫做“暴风雨之家”；或者称之为“风极”。
B:他的衬衫湿透了，像刚从水中捞起来一样。
C:若从全球范围看，海洋和大气循环系统就像一台巨大的热动力机。
D:化石是历史的证人，它帮助我们认识地球历史的发展过程。
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关于疏水器的选用下列何项是错误的？（）

A、疏水器设计排水量应该大于理论排水量

B、减压装置的疏水器宜采用恒温型疏水器

C、蒸汽管道末端可采用热动力式疏水器

D、靠疏水器余压流动的凝水管路，△Pmin值不小于50kPa

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Many objects in daily use have clearly been influenced by science. However, their form. and function, their dimensions and appearance, were determined by technologists, designers, inventors, and engineers using nonscientific modes of thought. Many features and qualities of the objects that a technologist thinks about cannot be reduced to unambiguous verbal descriptions; they are dealt with in the mind by a visual, nonverbal process, pyramids, cathedrals, and rockets exist not because of geometry or thermos-dynamics (热动力学), because they were first the picture in the minds of those.

The creative shaping process of a technologist's mind can be seen in nearly every artifact that exists. For example, in designing a diesel engine, a technologist might express individual ways of nonverbal thinking on the machine by continually using an intuitive sense of rightness and fitness. What would be the shape of the combustion chamber? Where should the valves be placed? Would it have a long or short piston? Such questions have a range of answers that are supplied by experience, by physical requirement, by limitations of available space, and not in the least by a sense of form. Some decisions, such as wall thickness and pin diameter, may depend on scientific calculations, but the nonscientific component design remains primary.

Design courses, then should be an essential element of engineering curricula. Nonverbal thinking, a central mechanism in engineering design, involves perceptions, which is the special technique of the artists, not the scientist. Because perceptive processes are not assumed to need "hard thinking", nonverbal thought is sometimes seen as a primitive stage in the development of cognitive processes and inferior to verbal mathematical thought.

If courses in design, which in a strongly analytical engineering curriculum provide the background required for practical problem-solving, are not provided, we can expect to encounter silly but costly errors occurring in advanced engineering systems. For example, early modes of high-speed railroad cars loaded with sophisticated controls were unable to operate in a snowstorm because the fan sucked snow into the electrical system. Absurd random failures that plague automatic control systems are a reflection of the chaos that results when design is assumed to be primarily a problem in mathematics.

In the passage, what is the writer primarily concerned with?

A．Identifying the kinds of thinking that are used by technologists.

B．Stressing the importance of scientific thinking in engineering design.

C．Proposing a new role for nonscientific thinking in engineering.

D．Contrasting the goals of engineers with those of technologists.

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