The connecting rod large end bearing shell generally has tags for location and oil grooves round the center of its axial length which correspond with grooves in the () through which oil is transmitted up the rod to lubricate the small end.
根据《中华人民共和国海船船员适任考试发证规则》的规定,在中国籍海船上任职的船长、甲板部高级船员金额值班水手应当持有与其所服务的()和所担任的植物相符的有效适任证书。
①船舶航区;
②船舶种类;
③主机功率;
④船舶吨位。
免费的网站请分享给朋友吧