金融衍生工具都实行保证金交易，合约的了结一般采用现金差额结算的方式进行。
下列选项中是受弯构件正截面承载力极限状态验算依据，是（）和混凝土均能充分利用。 ["适筋梁钢筋","超筋梁钢筋","少筋梁钢筋","箍筋梁钢筋"]
我国加入WTO后，外资银行可以对中资企业和中国居民开办外汇业务。
增值税一般纳税人购进废旧物资经营单位销售的废旧物资，可按照废旧物资专用发票注明的金额的（）准予抵扣进项税 ["7%","10%","13%","17%"]
Which two of the following actions must an OSPF NSF-capable router execute after a supervisor engine switchover?（） (Choose two.) [" Re-learn the available OSPF neighbors with neighbor relationship restart"," Send the graceful restart message"," Re-acquire the link state database content for the network"," Re-learn the available OSPF neighbors without neighbor relationship restart"]
试述漏电保护的适用范围及作用？
