线路长度对ADSL速率的影响不是太大,但超过后(),ADSL速率随线路长度的增加而急剧下降.
A.3KM
B.4KM
C.2KM
D.6KM
参考答案:C
下列城邑中,在明代人口较多,面积最大的是:()
A、辽阳
B、沈阳
C、开元
D、抚顺
The holding power of an anchor increases when the().
A.amount of chain lying along the bottom increases
B.length of the catenary is reduced
C.mooring line tension is increased
D.amount of chain lying along the bottom decreases