When viewed from astern, if the propeller revolves in a clockwise direction when going ahead, it is known as （）. ["ahead direction","astern direction","right-handed","left-handed"]
签发银行汇票成功，业务状态与凭证状态分别为（）。 ["已清算","已记账","已使用","已作废"]
故障电路板的常规检查方法（）。 ["观察熔丝、元件颜色","用手摸式轻晃动集成电路","测量整版电源及各芯片电源之间的电阻值","通电检查，注意冒烟打火现象"]
中华民族实现繁荣与大同的前提条件和根本保证是（）。 ["天下为公，世界大同","以和为贵、亲仁善邻、协和万邦、厚德载物","互相学习、兼收并蓄","反对侵略战争，维护祖国统一"]
管路安装中根据图纸正确选择压力表、压力表接头、（）、弯头、阀门、三通若干。 ["吊链","三爪","铜棒","短节"]
在接收用户送来的气瓶时，应做哪些检查和记录？
