Which of the following features are available in WebSphere Commerce Business Edition， but not available in WebSphere Commerce Professional Edition？（） Available to Promise。 Collaborative workspaces。 Contract-based purchasing。 Rule-based discounts。 Request for Quote。
在每次施工完毕，封堵器都应（） A、维修 。 B、检修 。 C、更换液压油 。 D、整修。
An operator is asked to shutdown the telnet service for security reasons. What are the appropriate commands to achieve this?（） comment out telnetd in /etc/services refresh -s inetd。 comment out telnetd in /etc/inetd.conf refresh -s inetd。 comment out telnetd in /etc/rc.tcpip refresh -s telnetd。 comment out telnetd in /etc/inetd.conf refresh -s telnetd。
A user wants to be permanently added to the dba group. Which of the following commands or processes can be used to accomplish this（） chgrp。 chuser。 edit /etc/user。 edit /etc/security/grou。
血小板粘附率降低见于下列哪一种疾病（） 巨大血小板综合征。 心肌梗塞。 糖尿病。 缺血性中风。
中间冷凝器和中间再沸器的使用会使分馏过程的总热负荷（），有效能降级程度会（）。
