【名词&注释】
服务质量(qos)、积极作用(positive role)、薄弱环节(weak link)、有利于(beneficial to)、有效地(effectively)、有助于(helpful to)
[单选题]The angle of loll is a stability term which applies to a floating ship with().
A. off-center loading
B. stiff characteristics
C. excessive pitch or roll
D. negative initial stability