为什么要求汽轮机调速系统，当机组突然甩去全负荷时，应保证不使危急保安器动作？
新课程改革要注重学生发展，贴近（）实际，让学习成为学生喜欢的一种充满（）的生活方式。
直径为1.5m的混凝土灌注桩，应埋设不少于几根声测管（）。 ["1","2","3","4"]
批量生产与批量定制。
In your Cisco EIGRP network， you notice that the neighbor relationship between two of your routers was recently restarted. Which two of these choices could have made this occur？（） ["An update packet with init flag set from a known， already established neighbor relationship was received by one of the routers.","The ARP cache was cleared.","The counters were cleared.","The IP EIGRP neighbor relationship was cleared manually."]
心身障碍
