单项选择题 The International Association of Lighthouse authorities (IALA) buoyage system “A” uses some types of marks to distinguish safe navigation? Which type(s) does(do) not belong to the system?（）

单项选择题 Which refers to the living space for seafarers?（）

单项选择题 （）cargoes in IMSBC code are those that are likely to liquefy.