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[单选] Aluminum lifeboats are subject to damage by electrolytic corrosion (the aluminum being eaten away). In working around boats of aluminum you must be very careful().

A . to keep the boats covered at all times
B . not to leave steel or iron tools lying in or near these boats
C . to keep an electric charge on the hull at all times
D . to rinse these boats regularly with salt water

Before hydraulic starting of an engine on a covered lifeboat,what need NOT be checked?() Fuel supply line valve。 Pressure registered on the accumulator gauge。 Cold-spark voltage readings test lamp。 Engine stop control。 案件管理系统中案件主表名是哪个?() ZF_LA_DETAIL。 ZF_LA_GEN。 ZF_LA_DCRY。 ZF_LA_TEST。 商业银行应设置并向客户告知理财业务的投诉电话,指定专门的人员或部门及时处理客户投诉。同时,商业银行应建立客户投诉的()制度,对客户投诉情况进行研究分析。 登记。 分类。 汇总。 统计。 查询省内其他地市登记的企业的巡查记录,可以用下面哪个软件?() 市场准入。 市场管理。 浙江省数据查询。 基层管理。 1893年美国制定了《哈特法》,其首创的原则是()。 承运人的适航义务是绝对的。 承运人的驾驶和管理船舶的过失可以免责。 火灾免责。 Aluminum lifeboats are subject to damage by electrolytic corrosion (the aluminum being eaten away). In working around boats of aluminum you must be very careful().
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