通信管道的总体规划应包括()等的规划和建设方案。
A.主干管道
B.支线管道
C.驻地网
D.以上都是
参考答案:D
补写出下列名篇名句中的空缺部分。
(1)高余冠之岌岌兮,长余佩之陆离。_________,_________。(屈原《离骚》)
(2)锲而舍之,_________;锲而不舍,_________。 (《劝学》)
(3)_________,_________?复道行空,不霁何虹?(杜牧《阿房宫赋》)
A security market in which all the bids and asks for a stock are gathered to arrive at a single price that satisfies most of the orders is best described as a:()
A. Call market.
B. Dealer market.
C. Continuous market.