Bottom blow valves are installed on auxiliary water-tube boilers to ()
A. completely drain the boiler in an emergency
B. prevent sludge from forming in the drum
C. remove floating impurities from the boiler water surface
D. remove settled solids from the water drum
对管理层来说,实施质量活动最有效的方法之一是()。
A. 建立与组织绩效紧密相连的质量目标
B. 经常召开质量会议
C. 发布解释质量目标的公告
D. 聘请质量顾问
Which configuration would make an IP SLA probe use a precedence value of 5?()
A. ip sla 1 icmp-echo 1.1.1.1 tos 160
B. ip sla 1 icmp-echo 1.1.1.1 tos 20
C. ip sla 1 icmp-echo 1.1.1.1 precedence 5
D. ip sla 1 icmp-echo 1.1.1.1 dscp 20
预热温度和预热时间对TMP、CTMP浆的质量有很大影响,适宜的预热温度应在()范围