[问答题] 试述海洋砂矿的成矿控制因素。

下列SDCCH信道配置中SDCCH信令子信道最多的是（） ["SDCCH\/4","SDCCH\/8","SDCCH\/4+CBCH","SDCCH\/8+CBCH"] 简述饲料消毒。 吊艇索应为柔软的并有足够韧性的（）。 The cooler as the liquid becomes, （）. ["the faster it will evaporate","the slower it will condense","the slower it will evaporate","the faster it will flow"] While steaming slowly in the harbor，no ship is （） to exceed the speed limited． ["assumed","appreciated","promised","permitted"] 试述海洋砂矿的成矿控制因素。