Drinking salt water will（）.

A、flourish B、fade C、stem D、cultivate

A . a separate air ejector unit B . a direct unimpeded connection between second stage and salt water feed heater C . either by vacuum drag or an external line from the first stage via a fixed orifice D . the fixed orifice provided in the steam supply line

A . at a maximum rate of two ounces per day B . after mixing with an equal quantity of fresh water C . if gather during or immediately after a hard rain D . under no circumstance

A . rise when the steam pressure is increased B . remain constant as long as the feed pump operates C . fall when the steam pressure is decreased D . vary as the steam demand change

A . (1) only B . (2) only C . both (1) and (2) D . neither (1) or (2)

A . condensate B . a small amount of make-up feed C . A and B D . None of the above

A . The double bottom B . The cofferdam C . The navigating bridge D . The superstructure

A . Small sips at regular intervals during the day B . The complete daily ration at one time during the day C . One-third the daily ration three times daily D . Small sips only after sunset

A . It means summer draft B . It means maximum draft C . It means fresh water draft D . It means seawater draft

A . much B . more C . most D . le

A . induce vomiting B . absorb the poison from the blood C . neutralize the poison in the blood D . increase the digestive process and eliminate the poiso

A．looked B．surveyed C．prepared D．measured

A．ground water B．rainwater C．drinking water D．fresh water

Aassure Binsure Creassure Densure

The expression “the habit” (para. 1, sentence 4) refers to drinking water which _______ A. has no smell B. is tasteless C. has vitamins D. is flavored

The human body demands that the amount of salt in the blood always stay the same.When the body does not get enough salt, it protects itself by letting less salt leave the body in urine and sweat. But it cannot reduce this output to zero. Some salt is always escaping. On a completely saltless diet, like that of some people in Africa, the body steadily loses small amounts of salt through the kidneys (肾) and sweat glands (腺). It then tries to ad-just to this loss by speeding up its secretion (分泌) of water. In this way, the body attempts to keep the amount of salt in the blood at the necessary level. The result is a slow drying up of body and, finally, death. The person dies of thirst. In cases where there is little or no water to drink, the body tries to do the opposite thing. Again, it must keep the salt level in the blood constant. Because it has little water, it attempts to stop water from leaving the body and to increase its secretion of salt. But, as with the escaping salt, it cannot be completely successful. Some water still leaves and the person eventually dies of thirst. In short, the body's normal needs for salt and for water are both parts of the same important need to keep the salt level in the blood constant. Some African people once drank animal urine______. A．when they were going to die B．because they were thirsty C．because there was little salt D．because they were short of water

A．gave up B．will give up C．had given up D．give up

A、the analysis of the salinity of ocean waters B、the causes of the variation in oceanic salinity C、the importance of the changes in oceanic salinity D、the different forms of salts in ocean waters