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The U.S. Space Agency NASA says ______ orbiting Mir space station has lost its primary and backup oxygen sources.
The U.S. Space Agency NASA says ______ orbiting Mir space station has lost its primary and backup oxygen sources.
admin
2012-04-23
43
问题
The U.S. Space Agency NASA says ______ orbiting Mir space station has lost its primary and backup oxygen sources.
The U.S. Space Agency NASA says Russia’s orbiting Mir space station has lost its primary and backup oxygen sources. If the problem is not fixed, the 3 - member crew would have to abort the mission. But, a Russian space official in Moscow told Ruters News Agency that only the primary generator developed trouble and that the unit was repaired by the crew. More about the latest problem on board the space station from VOA’s Nick Simming.
"The U. S. Space Agency says Mir’s two primary sources of oxygen have stopped working and now there is only several days’ supply of oxygen inside Mir’s cabin. Mir’s backup oxygen generating candles failed Monday just alter the normal oxygen supply system used by the spacecraft unexpectedly shut down. That normal oxygen source, a method that extracts oxygen from water, bad been turned off for several days to conserve energy while Mir’s crew performed repairs. But when the system was activated Monday, it overheated and automatically shut down. NASA’s problem is not fixed soon, the two Russians and one American on board will have to abort. This problem is the most serious to plague the space station which has endured power loses, computer malfunction and even a collision with a supply vessel all in the past six months. Nick Simming VOA News, Washington. "
选项
A、there is little supply
B、there is still enough supply
C、there is several days’ supply
D、there is only two days’ supply
答案
C
解析
听力原文中的第二段中就直接提到“The U. S. Space Agency Says Mir’s two primary sources of oxygen have stopped working and now there is only several days’ supply of oxygen inside Mir’s cabin”。因此同前面几题一样,只要听到这句信息就不难判断出正确答案。
转载请注明原文地址:https://jikaoti.com/ti/mIjYFFFM
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