用人单位应如何建立职工名册？
威廉配第初步考察了资本主义经济的价格、工资、地租、利息等问题，从而成为英国古典经济学之父。主要经济著作有（）。 ["《赋税论》","《献给英明人士》","《爱尔兰政治解剖》","《政治算术》"]
Before a tank is to be crude oil washed，the oxygen content in the tank must be measured at a position（）. ["immediately above the level of the oil","at the top of the tank","in the vent riser","one meter from the deck"]
Backfire flame arrestors are installed on（）. ["fuel tanks","spark plugs","carburetors","distributor"]
下列业务状态不属于通兑业务的是（）。 ["已冲销","已接收未记账","已清算","已记账"]
用人单位与劳动者何时签订劳动合同？
