在热处理炉上经常使用高速烧嘴作用是()。
A. 提高加热能力
B. 安装方便
C. 提高气流扰动
D. 燃烧火焰好
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%