Today a pilot is totally dependent on what the air traffic controller on the ground tells him. He can’t see enough to be safe. Flight watch is an instrument intended to help him.
On a screen in front of the pilot, there will be a map of the (21) around the plane. The pilot’s own (22) level or height and his own plane at the center of the (23) will show up. On the map any other planes in the airspace will (24) as spots of light with "tails" showing the direction of their light. The flight watch map is (25) for the other planes are not shown at their true (26) , but at their distances away in flying time. This (27) the problem of fast planes being too far away to be seen (28) likely to make contact in seconds and (29) planes that are close enough to be seen but so slow that there’s no chance of (30) for, say, ten minutes.
The pilot will be able to se
A. solves
B. causes
C. gets away
D. removes
| If the Federation of American
Scientists made a list of educational video games, you might expect to find
Oregon Trai ,the Story of Conestoga Wagons Trekking into the American West ,or
the geography favorite Where in the World Is Carmen Sandiegol And don’t forget
Half-Life 2. That’s the one where you burn alien zombies to death with exploding
barrels of fuel. OK, that’s exaggerating—but only a little. Where parents see hours wasted in front of a screen, these scientists see potential. An FAS study released this week, titled "Harnessing the Power of Video Games for Learning, "reports that best-selling games are built in surprisingly pedagogical ways. Players improve at their own pace. Beating a level requires experimentation, failure and learning from mistakes. Most new games can be played online, requ A. it is a waste of time to play video games. B. some video games are beneficial to children. C. such games as Half-Life 2 is unforgettable. D. the function of some video games is exaggerating. [单选题]微机监测系统网络中各网络节点应采用统一的( )时钟。
A.Internet B.GSM-R C.北京 D.GPS [单选题]男性，55岁。身高175cm，体重70kg，因2个月内体重下降5kg而就诊，查空腹血糖7.8mmol/L，下列正确的是
A.可诊断为继发性糖尿病 B.应进行口服葡萄糖耐量试验 C.可诊断为糖尿病 D.可诊断为糖耐量减低 E.应进行100g口服葡萄糖耐量试验 [单选题](La3A4049). 在单相全波整流电路中 , 若要求输出直流电压为 18V, 则整流变压器副边的输出电压应为 ( )V
A.16.2 B.18 C.20 D.24 [判断题]在确定设置信号机地点时，除满足信号显示距离的要求外，还应考虑到该信
号机不致被误认为邻线 的信号机。( ) A.正确 B.错误 [单项选择]启动柴油机时，柴油机不工作，其主要原因是（）。
A. 复原手柄未复原 B. 调速器故障 C. 燃油泵卡死 D. 燃油器堵塞 [单选题]高炉煤气和焦炉煤气的共同特点有( )
A.发热值高 B.故燃烧速度快、火焰短 C.易燃易爆有毒 D.加热时加热系统阻力小 我来回答: 提交
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