某公司投保了企业财产保险，该公司应当在保险起保后（）日内，按照保险费率一次性交清保险

肝火引起经行头痛的特点是（）

A.头晕，头部绵绵作痛

B.巅顶掣痛，头晕目眩

C.头痛剧烈，痛如锥刺

D.头部胀痛重着

E.头痛如裹，头晕目眩

某施工单位承包了一条21.7km的二级公路，路面面层为沥青混凝土，基层为水泥稳定碎石。其中K22+300～K22+700路段，地面横坡陡于1:5，填方平均高度为12m左右。施工单位填筑前，对地基原状土进行了检测，土的强度符合要求，然后对地基进行了压实处理。由于前后路段开挖后，可调运利用的填料主要是石方，为节约用地，降低建设成本，在请示建设单位后，施工单位将填土路基变更为填石路基，边坡为1:1.5。为了加快施工进度，采用了倾填的方式进行施工，在路床底面下1.0m范围内改为分层填筑并压实。在整个施工过程中，施工单位对石方路基进行了质量检验。路堤填筑完毕后不久，该路段出现了部分边坡坍塌。经处理后，该项目通过验收，评定为合格工程。
[问题]

在工程质量评定等级时，通常采用双指标控制工程质量等级，请问双指标是哪两个指标

属于计量收发差错和管理不善等原因造成的存货短缺或毁损，应先扣除残料价值、可以收回的保险赔偿和过失人的赔偿，然后将净损失记入营业外支出。 ( )

Networks can be interconnected by different devices. In the physical layer, networks can be connected by (11) 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 (12) ,examine the MAC address, and forward the frames to a different network while doing minor protocol translation in the process. In the network layer, we have routers that can connect two networks. If two networks have (13) network layer, the router 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 (14) . As an example, gateways between Internet e-mail and X.400 e-mail must (15) the e-mail message and change various header fields.

11（）

A.repeaters

B.relays

C.packages

D.modems

战勤保障大队组织的自我保障演练每季度不少于（）次，社会联勤保障演练每年不少于1次。

A.1.0

B.2.0

C.3.0

D.4.0