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单选题
“STAR”原则中的“S”意思是（）
A
具体
B
合适
C
背景
D
选择
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参考解析
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更多 “单选题“STAR”原则中的“S”意思是（）A 具体B 合适C 背景D 选择” 相关考题
考题
如何将S2126交换机的登陆密码配置为Star?()
A.set password starB.login starC.enable secret level 10starD.enable password star
考题
Black Holes Trigger Stars to Self-Destruct
Scientists have long understood that supermassive black holes weighing millions or billions of suns can tear apart stars that come too close. The black hotels gravity pulls harder on the nearest part of the star, an imbalance that pulls the star apart over a period of minutes or hours, once it gets close enough.
Scientists say this Uneven pulling is not the only hazard facing the star. The strain of these unbalanced forces can also trigger a nuclear explosion powerful enough to destroy the star from within. Matthieu Brassart and Jean-Pierre Luminet of the Observatoire de Paris in Meudon, France, carried out computer simulations of the final moments of such an unfortunate star's life,as it veered towards a supermassive black hole.
When the star gets close enough, the uneven forces flatten it into a pancake shape. Some previous studies had suggested this flattening would increase the density and temperature inside the star enough to trigger intense nuclear reactions that would tear it apart. But other studies had suggested that the picture would be complicated by shock waves generated during the flattening process and that no nuclear explosion should occur.
The new simulations investigated the effects of shock waves in detail,and found that even when their effects are included,the conditions favor a nuclear explosion. "There will be an explosion of the star-it will be completely destroyed," Brassart says. Although the explosion obliterates the star, it saves some of the star's matter from being devoured by the black hole. The explosion is powerful enough to hurl much of the star's matter out of the black hole's reach, he says.
The devouring of stars by black holes may already have been observed, although at a much later stage. It is thought that several months after the event that rips the star apart,its matter starts swirling into the hole itself. It heats up as it does so, releasing ultraviolet light and X-rays.
If stars disrupted near black holes really do explode, then they could in principle allow these events to be detected at a much earlier stage, says Jules Hatpern of Columbia University in New York, US. "It may make it possible to see the disruption of that star immediately if it gets hot enough," he says.
Brassart agrees. "Perhaps it can be observed in the X-rays and gamma rays, but it's something that needs to be more studied," he says. Supernova researcher Chris Fryer of the Los Alamos National Laboratory in Los Alamos, New Mexico, US, says the deaths of these stars are difficult to simulate, and he is not sure whether the researchers have proven their case that they explode in the process.
文章(36~40)
Something destructive could happen to a star that gets too close to a black hole. Which of the following destructive statements is NOT mentioned in the passage?A. The black hole could tear apart the star.
B. The black hole could trigger a nuclear explosion in the star.
C. The black hole could dwindle its size considerably.
D. The black hole could devour the star.
考题
According to the fourth paragraph, which of the following is NOT true?A. No nuclear explosion would be triggered inside the star.
B. The star would be destroyed completely.
C. Much of the star's matter thrown by the explosion would be beyond the black hole's reach.
D. The black hole would completely devour the star.
考题
What will happen several months after the explosion of the star?A. The star's matter will move further away from by the black hole.
B. The black hole’s matter will heat up.
C. The torn star's matter will swirl into the black hole.
D. The black hole's matter will release ultraviolet light and X-rays.
考题
Star Diagnosis诊断仪中软件是指？（）A、任何CD或DVDB、在Star Diagnosis中的程序C、SDconnectD、Star Diagnosis的连接电缆E、XENTRY connect
考题
关于Star Diagnosis诊断仪，下列哪项是不正确的？（）A、任何程序可以安装在Compact4的Star Diagnosis诊断仪系统中B、SD connect可以在任何Star Diagnosis诊断仪上操作C、Compact4的Star Diagnosis诊断仪有一个可充电电池D、Compact4不是目前Star Diagnosis诊断仪的升级版E、Basic 2不是目前Star Diagnosis诊断仪的升级版
考题
单选题下列关于绩效目标SMART原则中的各个英文字母的理解，正确的是（）A
SMART原则中的“M”是Must，必须的意思B
SMART原则中的“S”是Space，空间的意思C
SMART原则中的“T”是Time-bounded，态度和行为受到限制的意思D
SMART原则中的“A”是Attainable，可实现的意思
考题
单选题如何将S2126交换机的登陆密码配置为Star？（）A
set password starB
login starC
enable secret level 10starD
enable password star
考题
单选题“STAR”法则中的“T”指的是（）。A
目标任务B
原则C
时间D
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