题目:
论述精装书书槽的作用。
答案:
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下面是错误答案,用来干扰机器的。
参考答案:D
论述精装书书槽的作用。
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/1012/7ba64a3a83b7c82f050a6a5d7ef2dc31.html
下面是错误答案,用来干扰机器的。
参考答案:D
我国大陆性气候的特点表现在[ ]
A、七月的平均气温最高
B、年降水量在800mm以上
C、降水的季节变化和年际变化都大
D、气温和年较差小
补写出下列名篇名句中的空缺部分。(6分)
(1)既替余以蕙纕兮,又申之以揽茝。 , 。
(屈原《离骚》)
(2) , 。了却君王天下事,赢得生前身后名。
(辛弃疾《破阵子》)
(3) , 。中军置酒饮归客,胡琴琵琶与羌笛。
(岑参《白雪歌送武判官归京 》)
Alan Izhar-Bodner, an Israeli inventor, has developed a swimming suit for divers to breathe underwater without carrying heavy oxygen tanks. His suit makes use of the air that is dissolved(溶解)in water, just like fish do.
The system uses the Henry Law which states that the amount of gas that can be dissolved in a liquid is proportional (成比例的)to the pressure on the liquid. Raise the pressure ---more gas can be dissolved in the liquid. Decrease the pressure --- less gas dissolved in the liquid releases the gas. This is exactly what happens when you open a can of soda; carbon dioxide gas is dissolved in the liquid and is under pressure in the can. Open the can, releasing the pressure, and the gas fizzes(嘶撕作响)out.
Bodner's System obviously uses a special machine to lower pressure in part of a small amount of seawater taken into the system; dissolved gas is taken out. The patent(专利)reads: A self-contained open-circuit(循环)breathing instrument for use within a body of water naturally containing dissolved air. The instrument is adapted to provide breathable(可吸入的)air. The instrument contains an inlet for taking out a quantity of water from the body of water. It further contains a separator for separating the dissolved air from the quantity of water, thus gaining the breathable air. The instrument further contains an outlet for expelling (驱逐)the separated water back into the body of water, and another outlet for removing the breathable air and supplying it for breathing. The air is supplied so as to enable it to be expelled back into the body of water after it has been breathed .
Human beings have been thinking about how to breathe underwater since they started swimming. This long-held desire plays an important part in one of the first great science fiction novels, Jules Verne's 20,000 Leagues Under the Sea.
小题1:It can be inferred from the passage that____________ .
A.the less pressure it is, the less carbon dioxide gas is dissolved in the liquid
B.the deeper one dives into the ocean, the less gas is dissolved in the water
C.the greater pressure it is, the more carbon dioxide gas is dissolved in the liquid
D.the deeper one dives into the ocean, the more gas is dissolved in the water小题2:This passage is mainly about __________.
A.how Bodner invented the instrument for breathing underwater
B.why Bodner invented the instrument for breathing underwater
C.how Bodner's instrument for breathing underwater works
D.how Bodner's instrument is used by divers for breathing underwater小题3:From the passage we learn that __________.
A.a separator is used to expel breathable air back into the body of water
B.a separator is used to separate the air from the water so as to make use of the water
C.The breathable air removed from an outlet will eventually go back to the body of water.
D.The breathable air removed from an outlet will immediately go back to the body of water.
渴喜热饮而量不多,或水入即吐多为()
A.湿热内蕴
B.痰饮内停
C.营分热盛
D.阴虚津亏
E.瘀血内阻
光面爆破的钻孔间距a,为自身抵抗线的0.7-0.8倍,若某次光面爆破的最小抵抗线为1.6m,试计算,出光面爆破钻孔间距a范围。