游梁式抽油机调冲次操作中，准备工具不包括（） 专用摇把一根。 合适规格拔轮器一副。 铜棒一根。 光杆卡子。
解付银行汇票下列哪几项与票面不符，农信银中心返回拒绝应答（）。 票据类别。 申请人账户。 申请人户名。 代理付款行行号。
If the towing bridle legs are not of equal length（）. excessive strain is placed on the shorter leg。 the shorter leg may fail。 the longer leg is slack。 All of the above。
Wrought iron has an inherent resistance to corrosion but is not to be had freely , its place has been taken by the cuprous alloysAccording to the above sentence , which of the following statements is true?（） Wrought iron can resist liquids flow。 It is difficult to attain the wrought iron。 Wrought iron should be combined with cuprous alloys。 The cuprous alloys have mere disadvantages than wrought iro。
自藕变压器在使用时要注意（）。 输入、输出端的公共端必须接电源零线。 一般在实验室里作为电压调压器。 变压器的外壳要可靠接地。 用于一般场合的安全电压调压。
游梁式抽油机调冲次操作中，人身伤害主要包括（）
