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根据《船员日常防火守则》,下列哪些作法正确()。 Ⅰ.室外各类照明灯具应保持水密; Ⅱ.船舶在港期间需要明火作业,必须向主管机关申报,得到批准后方可执行; Ⅲ.物料仓库照明灯具的上方不得放置易燃物; Ⅳ.烟头必须放在注水的烟灰缸里。
100BASE-T的传输介质是()。
预防全身麻醉时口腔、呼吸道分泌物增多的药物是()。
在税收三个特征中居于核心地位的是()
电脑不仅能传递语音,还能传递()信息。
不属于消防控制设备对消火栓给水系统的功能有:()
支付宝卡通签约的银行账户暂限为汇通借记卡,支付宝卡通每日支付限额为()元。
心内膜弹力纤维增生症的心腔变化一般为( )。
鱼类免疫球蛋白的只有IgG一种类型。
(1).经济合同法()。 |(2).批准文号()。 |(3).药品生产企业许可证()。 |(4).营业执照()。
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