If tap water was as dangerous as some people think,______________________（那我们中更多人将得病).

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• A facility used for the discharge of a cargo of a particular hazard，such as chlorine，butane or ethane，must have what to warn water traffic of an immediate danger during fire or cargo release?（）

  A . An emergency boat and crew B . A siren or rotating flashing light C . Flashing red lights located one-half mile upstream and downstream of the facility D . Buoys with flashing lights controlled from shore，located one-half mile upstream anddownstream of the facility

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• On a bulk chemical carrier，water should NOT be used as an extinguishing agent to fight a fire if the water may come into contact with the chemical called（）.

  A . acrylic acid B . benzene C . oleum D . vinyl toluene

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• It seemed as if all of a（）the animal had smelt danger in the air.

  A . sudden B . moment C . minute D . once

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• As oil pipe line connections were broken，（）quantity of oil was caused to spill onto the wharf and into the dock water.

  A . a not knowing B . an unknowing C . an unknown D . a not know

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• A vessel travelling down a narrow channel，especially if the draft is nearly equal to the depth of the water，may set off the nearer side. This effect is known as（）.

  A . smelling the bottom B . squatting C . bank suction D . bank cushio

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• A vessel traveling down a narrow channel，especially if the draft is nearly equal to the depth of the water，may set off the nearer side. This effect is known as（）.

  A . smelling the bottom B . squatting C . bank suction D . bank cushio

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• Where can you obtain information about full database backup set created using RMAN， if the control file was used as the repository？（）

  A . V$BACKUPSET B . RC_DATABASE C . V$BACKUP_SET D . RC_BACKUP_SET

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• If a seaplane is not used as a means of transpiration on water but is capable of being used so，it shall（）.

  A . be regarded as a vessel not under command B . be regarded as a vessel underway C . be regarded as a vessel D . be regarded as a sailing vessel

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• As for an oil-fired boiler if at a normal steaming condition and water goes out of sight in gauge glasses the action you should take is: （） (1) secure oil to fires (2) increase feed pump pressure

  A . （1） B . （1）and（2） C . （2） D . neither（1）nor（2）

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• Whena pencil is partly in a glass of water, it looks as if it____

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• When a pencil is partly in a glass of water, it looks as if it ( ).

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• The policeman __________ his shoulders as if to say there was nothing he could do about the matter.

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• Think before you ___ the tap ___. Do you really need the water?

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• Some signs have double functions, to inform as well to warn, like Danger Deep Water, DANGER KEEP OUT; or to warn as well as to instruct, like BEWARE PICKPOCKET, Caution Mind your head.

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• If natural selection was to account ______ the evolution of man&39;s higher faculties, as Darwin was convinced it could, then those faculties must have a material basis.

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• To us it seems so natural to put up an umbrella to keep the water off when it rains. But actually the umbrella was not invented as protection against rain. Its first use was as a shade against the sun.

  Nobody knows who first invented it, but the umbrella was used in very ancient times. Probably the first to use it were the Chinese, way back in the eleventh century B.C. We know that the umbrella was used in ancient Egypt and Babylon as a sunshade. And there was a strange thing connected with its use: it became a symbol of honor and authority. In the Far East in ancient times, the umbrella was allowed to be used only by royalty or by those in high office. In Europe, the Greeks were the first to use the umbrella as a sunshade. And the umbrella was in common use in ancient Greece. But it is believed that the first persons in Europe to use the umbrella as protection against the rain were the ancient Romans. During the Middle Ages, the use of the umbrella practically disappeared. Then it appeared again in Italy in the late sixteenth century. And again it was considered a symbol of power and authority. By 1680, The umbrella appeared in France, and later on in England. By the eighteenth century, the umbrella was used against rain throughout most of Europe. Umbrellas have not changed much in style. during all this time, though they have become much lighter in weight. It wasn't until the twentieth century that women's umbrellas began to be made, in a whole variety of colors. The first use of umbrella was as ______. A．protection against rain B．a shade against the sun C．a symbol of power D．a symbol of honor

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• I stared into the blackness and wondered if he was as aware of my presence as I______.

  A．was of his B．was of him C．did him D．did of his

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• Environmental scientists are concerned that if industrial pollution was to continue without effective measures, the Earth's surface would warm up to a dangerous degree in the next few centuries.

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• Once she was in the house, the woman behaved as if what she was looking for .

  A.might be in the kitchen B.was more likely to be upstairs C.would be easily seen by the light from the hall D.would look frightening to a child

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• As for an oil-fired boiler if at a normal steaming condition and water goes out of sight in gauge glasses the action you should take is: (1) secure oil to fires; (2) increase feed pump pressure.

  A.(1) B.(1) and (2) C.(2) D.neither (1) nor (2)

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• ____was regarded as a friend of the poor and a dangerous enemy to certain types of &qu

  A．A.Thackeray B．B.Walter Scott C．C.Charles Dickens D．D.Jane Austen

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• The boy, who was crying as if his heart would break, said, when I spoke to him, that

  The boy, who was crying as if his heart would break, said, when I spoke to him, that he was very hungry, because he had had no food for two days.

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• Someone must have left the tap on,____ the water was running over and flooding the kitchen.

  A．therefore B．for C．because D．nevertheless

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• Scientist 2 explains that ice sublimes to water vapor and enters Europa&39;s atmosphere. If ultraviolet light then broke those water vapor molecules apart, which of the following gases would one most likely expect to find in Europa&39;s atmosphere as a result of this process？

  A.Nitrogen B.Methane C.Chlorine D.Oxygen

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