Which of the following is helpful to allow an IPv6 host to learn the IP address of a default gateway on its subnet?()
A. Stateful DHCP
B. Stateless RS
C. Stateless autoconfiguration
D. Neighbor Discovery Protocol
在地形图上,量得A点高程为21.17m,B点高程为16.84m,AB距离为279.50m,则直线AB的坡度为()。
A. 6.8%
B. 1.5%
C. -1.5%
D. -6.8%
液压支架工应熟练准确地按操作规程进行各种操作,要做到:快、够、正、匀、平、紧、严、净,其中“够”是指()
A. 移架速度快
B. 推移步距够、立柱支撑初撑力要够
C. 操作正确无误
D. 平衡操作