“十一五”重大科技专项已提交专利申请多少件？其中发明专利多少件？
What is an appropriate use of a default route?（） [" to provide routing to a local web server"," to provide routing from an ISP to a stub network"," to provide routing that will override the configured dynamic routing protocol"," to provide routing to a destination that is not specified in the routing table and which is outside the local network"]
水库淤积会带来哪些问题？
风险损失的实际成本包括风险损失的（） ["无形成本","直接损失成本","预防损失成本","控制损失成本"]
一般而言，主合同无效，则担保合同就无效。
共代谢
