0n a vessel, the keel is the primary strength member of the lower hull form in which direction?（）. ["transverse","disagonal","longitudinal","vertical"]
感应带电和传导带电异同点是什么？
再生资源管理的主要内容包括（） ["回收管理","储运过程的管理","经营与销售过程管理","利用过程的管理"]
衡量保险市场的供给能力的指标有（）。 ["保险公司数量和资本额","保险市场的结构","保险公司的利润指标","保险经营资本所承担的风险的密集程度"]
0n the fully containerized ship, approximately one-third or more of the cargo is on deck above the rolling center. Top stowed containers are subject to（）. ["acceleration greater than on conventional vessels","acceleration less than on conventional vessels","acceleration the same as on conventional vessels","no acceleratio"]
扇形溜槽的优点是什么？
