《突发林业有害生物事件处置办法》规定,乡(镇)林业站工作人员、护林员按照县级以上人民政府林业主管部门的要求,参加林业有害生物的调查与监测工作。
参考答案:对
下列哪种溶液是等渗溶液()
A.5%葡萄糖溶液
B.10%葡萄糖溶液
C.5%碳酸氢钠溶液
D.1.4%碳酸氢钠溶液
E.11.2%乳酸钠溶液
Networks can be interconnected by different devices. In the physical layer networks can be connected by (31) or hubs, which just move the bits from one network to an identical network. One layer up we find bridges and switches which operate at data link layer. They can accept (32) , examine the MAC address and forward the frames to a different network while doing minor protocol translation in the process. In network layer, we have routers that can connect two networks. If two networks have (33) network layer, the muter may be able to translate between the packer formats. In the transport layer we find transport gateway, which can interface between two transport connections. Finally, in the application layer, application gateways translate message (34) . As an example, gateways between Internet e-mail and X.400 e-mail must (35) the e-mail message and change various header fields.
A.analyze
B.parse
C.delete
D.create