井下用机车运送爆炸材料时，炸药和电雷管不得在同一列车内运输。（）
查看答案
Which of the following characteristics are true assuming you are troubleshooting a networkcurrently enabled for VRRP？（Choose all that apply.）（）
A. The network is load balancing among different members of the VRRP group
B. The default hello timers are 1 second
C. The interface IP address is being used as the virtual IP address
D. There are several routers in the group simultaneously forwarding traffic for the group
E. It is a Cisco Proprietary protocol
F. The default hello timers are 3 second
造船业属于下列（）.
A. 中间产品型产业
B. 中间产品型基础产业
C. 最终需求型产业
D. 最终需求型基础产业
微信支付 
支付宝支付