A crankshaft whose center of gravity coincides with its center line is said to be ().
() are individuals and organizations that are actively involved in the project, or whose interests may be affected as a result of project execution or project completion.
() are individuals and organizations that are actively involved in the project, or whose interests may be affected as a result of project execution or project completion.
You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.
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。
在()上服务的船员不适用于我国现行《海船船员值班规则》。
Ⅰ.军用船舶;
Ⅱ.营业的游艇;
Ⅲ.渔船;
Ⅳ.构造简单的木质船舶。
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