首页/ 题库 / [单选题]The flash point of a的答案

The flash point of a liquid refers to the temperature ()

单选题
2022-01-21 13:27
A、at which a liquid will give off inflammable vapors
B、at which a liquid will burn steadily
C、at which a liquid will explode
D、that a liquid must reach before it will flow readily
查看答案

正确答案
A

试题解析

感兴趣题目
()doesn’t need to change package of goods or to stop in any place between the origin and the destination point.
A person referring to the stern sheets of a lifeboat is speaking of().
Through a () pump, the liquid is transferred from the suction to the discharge by the mechanical variation of the volume of a chamber or chambers.
The“person in the phrase ”to designate a person or persons ashore having direct access to the highest level of management” refers to ().
The ratio of the height of a vessel’s rudder to its width is referred to as the().
With reference to a vessel’s structural integrity, the most significant characteristic of a cryogenic liquid is its ().
Which of the listed conditions will cause the feed water that has not flashed to vapor in the first-stage of a flash evaporator, to flow into the second-stage?()
A petroleum liquid has a flash point of 85°F. This is a grade ().
The difference between a liquid and a gas is obvious (1)____ the conditions of temperature and pressure commonly found at the surface of the Earth. A liquid can be kept in an open container and fills it to the level of a free surface. A gas forms no free surface but tends to diffuse throughout the space available; it must (2)____ be kept in a closed container, as in the (3)____ of a planet’s atmosphere. The distinction was a prominent feature of early theories (4)____(describe) the phases of matter. In the nineteenth century, for example, one theory maintained that a liquid could be “dissolved” in a vapor without losing its identity, and another theory held that the two phases are made up of different kinds of molecules (分子). The theories now prevailing (5) t____ a quite different approach by emphasizing what liquids and gases have in common. They are both forms of matter (6)____ have no permanent structure, and they both flow easily. They are fluids.The (7)____(fundament) similarity of liquids and gases becomes clearly apparent when the temperature and pressure are raised somewhat. Suppose a closed container partially filled with a liquid is heated. The liquid expands, or in other (8)____, becomes less dense; some of it evaporates. In contrast, the vapor above the liquid surface becomes dense as the evaporated molecules are added to it. The combination of temperature and pressure (9)____ which the densities become equal is called the critical point. Above the critical point the liquid and the gas can no longer be (10)____(distinguish); there is a single, undifferentiated fluid phase of uniform density.
Which of the petroleum products listed has the lowest flash point?()
The () is used to measure the volume of a liquid or gas through a pipeline within any given period of time.
The period of a lighted aid to navigation refers to the().
相关题目
Point out which sentence is used to show the personality of a person who is used to sleeping
on his or her stomach?
Point out which sentence is used to show the personality of a person who is used to sleeping
on his or her stomach?
While flowing through the volute in a centrifugal pump, part of the () energy of the liquid is converted to () energy.
The path that a vessel is expected to follow,represented on a chart by a line drawn from the point of departure to the point of arrival,is the().
And having not a book of his own to point to, he pointed to mine which was lying on the desk. ( )
According to Hedge, a connotative meaning of a word refers to ‘the ___ or emotions of a language user in choosing a word and the influence of these on the listener’s or reader’s ___ of the word’
The payment proportionate to the part of the voyage accomplished or to the part of the cargo delivered is referred as().
Which of the following terms is used to identify the pressure of the liquid entering a pump?()
To determine the weight capacity of a deck in a cargo hold,you would refer to the().
When the dew point of the outside air is lower than or equal to the dew point of the air in the cargo hold,you should().
If he is a common carrier,he is absolutely responsible to the owner of the goods carried ()any loss or damage to them unless caused by an Act of God or the Queen’s enemies,or the inherent vice in the goods themselves,or the negligence of the owner of the goods,or a general average sacrifice.
Of a kind of liquid is used to cool the diesel engine, it is invariably called ()
A () pump is that where the volume of the pump chamber is alternately increased to draw the liquid in and then decreased to force the liquid out.
A radio determination system based on the comparison of reference signals with radio signals reflected,or retransmitted from the position to be determined,is().
The tendency of a flammable liquid to vaporize is indicated by its ().
The flash point of a petroleum product is an indication of its()
A single fitting installed in a pipeline that either blanks off the pipe or allows a full flow passage of a liquid through the pipe is referred to as a().
When a teacher intends to present or explain a new language point, which of the following grouping methods is mostly recommended?
When a teacher intends to present or explain a new language point,which of the following grouping methods is mostly recommended?
The flash point of a liquid refers to the temperature ()
广告位招租WX:84302438

免费的网站请分享给朋友吧