当液压、气动系统元件损坏会发生危险的设备，必须在系统中设置防止（）的保护装置。 ["超压；","超速；","失压或失速。"]
下列哪一项不是在全面建设社会主义时期取得的成就（）。 ["武汉长江大桥","第一颗原子弹爆炸成功","第一颗氢弹爆炸成功","人工合成牛胰岛素结晶成功"]
以下各项中不属于我国证券法的原则的一项是（）。 ["公开、公平、公正原则","利益均衡原则","分业经营与分业管理原则","合法性原则"]
An administrator must assign static IP addresses to the servers in a network.For network 192.168.20.24/29, the router is assigned the first usable host address while the sales server is given the last usable host address. Which of the following should be entered into the IP propertied box for the sales server?（） [" IP address:192.168.20.14 Subnet Mask:255.255.255.248 Default Gateway:192.168.20.9"," IP address:192.168.20.254 Subnet Mask:255.255.255.0 Default Gateway:192.168.20.1"," IP address:192.168.20.30 Subnet Mask:255.255.255.248 Default Gateway:192.168.20.25"," IP address:192.168.20.30 Subnet Mask:255.255.255.240 Default Gateway:192.168.20.17"," IP address:192.168.20.30 Subnet Mask:255.255.255.240 Default Gateway:192.168.20.25"]
幼儿园课程的要素是什么？
