合资经营企业
《哈尔滨客运段运输安全生产责任追究办法(试行)》规定,违规经营造成特别恶劣影响;给予直接(全部、主要)责任者离岗培训()个月以上。 ["3","6","9","12"]
级配碎石路拌法施工,人工摊铺时,其松铺系数约为() ["1.10~1.20","1.20~1.30","1.30~1.40","1.40~1.50"]
图示桁架有几根零杆() [" 0"," 2"," 4"," 6"]
功分器的作用是把中频信号分成若干路,以下()不是功分器常用路数。 ["2路","3路","4路","6路"]
简述航空母舰的用途。