简述矿产学的研究内容？ 正确。 错误。
婴儿开始出牙的时间是（）。 正确。 错误。
下列哪项不属于“科研不端行为”（）。 正确。 错误。
试述管理心理学的形成？ 正确。 错误。
You are working as a network technician， study the exhibit carefully. Your boss has informed youthat there have been problems with the WAN that is using EIGRP routing protocol. You arerequired to troubleshoot these problems. Before going to the questions of this sim， we should have a quick review about GRE tunneling：GRE Quick Summary. The picture below shows how to configure a GRE Tunnel between two routers， notice that the"tunnel destination" must be the IP address of the interface， not of the opposite tunnel. Notice： The tunnel source on one router must be specified as the tunnel destination on the otherrouter. Below are the questions of this lab-sim. What is the reason that tunnel 5 on the HQ router is down when its companion tunnel on theBranch5 router is up？（） 正确。 错误。
医疗器械经营企业取得《医疗器械经营许可证》或《医疗器械经营备案凭证》后，方可进行网上销售。
