上甲板的定义为() ["最上一层无开口甲板","最高一层全通甲板","阶梯型上甲板取最高露天甲板线和其平行于甲板的延长线","以上皆是"]
苯常存在于油漆和胶水中,其危害有哪些?
IC卡的英文全称是:() ["Integrated Communications Card","Integrated Circuit Card","Internet Computation Card","Intelligent Computing Card"]
如果在对某船进行检查中发现船舶主要特征与《国际吨位证书(1969)》所载不一致,那么应该() ["滞留该船","不予理会","按上级要求对该船进行罚款","及时通知该船的船旗国政府"]
粉尘有什么危害?
制鞋工人最可能患的职业病是?