Hoses used for cargo transfer operations must be tested and inspected at specified intervals by（）. ["a representative of the Captain of the Port","the operator of the vessel or facility","a representative of the National Cargo Bureau","low inert gas temperature"]
企业网银客户，可以授权（）通过企业网银进行查询和资金划拨授权人账户。 ["A.母公司","B.关联单位","C.平级兄弟单位","D.无关联单位"]
员工在工作时必须穿戴规定的（）。 ["工作服","工作帽","劳保用品"]
哪种不是焊接夹具按动力来源（）。 ["手动夹具","气动夹具","液压夹具","电动夹具"]
实际晶体的线缺陷表现为（） ["晶界","位错","空位和间隙原子","亚晶界"]
什么是同比？
