在精密进近程序设计中,除使用基本ILS面外,还必须使用()来评价障碍物:().
A.OAS
B.OIS
C.起飞爬升面
D.进近面
参考答案:A
单词拼写
1.I had no idea how to deal with ________(孤独)when I just began to study abroad.
2.I don't know what I would do ________ (不同地) if I were directing the movie.
3.________ (记录)fell like ripe apples on a windy day.
4.You see, my Tshirt has ________(缩水) after repeated washings.
5.We need a foreign policy which is more ________ (灵活的).
6.Education is ________ (义务) for children in most countries.
7.Education is not the filling of a pail, but the ________ (点燃) of a fire.
8.He's a terrible dancer; he's too clumsy and keeps ________ (踩) on my feet.
9.The office has been ________ (堆) with work ever since the new boss arrived.
10.A good teacher encourages you to ask questions, even if your ideas aren't________(完全地)
correct.
Serialization delay and (71) delay are the two components of network delay that are improved by increasing bandwidth. Serialization delay, i.e. the amount of time it takes to put the (72) on the wire, and queuing delay (depth of the queue) are improved by increasing the (73) from a 128Kbps circuit to a T1. However, three other components of delay, routing/switching deiay, distance delay, and protocol delay are components that can not be positively affected by an (74) in bandwidth. If the circuits are not over-utilized, then increasing the bandwidth to improve the (75) of the application will only result in an increased bandwidth with no positive effects on performance.
(72)是()
A.electricity
B.digital
C.data
D.variable