Coast Guard approved buoyant work vests（）. may be substituted for 10 percent of the required life preservers。 should be stowed adjacent to lifeboats and emergency stations。 may be used by boat crews and line handlers during lifeboat drills。 should be used when carrying out duties near a weather deck's edge。
从评价结果上来看，班主任工作评价应做到（） 总结性评价与形成性评价相结合。 单项与综合评价相结合。 纵向与横向相结合。 要定量反映与定性描述相结合。
深埋隧道二次衬砌作有何要求？
万用表是测量通信设备和线路绝缘电阻的仪表。
在班主任工作评价的组织实施中，形成评价的结论的是（） 确定标准。 收集资料。 组织动员。 分析判断。
Cargo vessels being navigated，and fitted with emergency lighting and power systems，shall have their emergency systems tested at least once（）.
