起锚时,下列那项特征不能用来判断锚离底() A.锚机负荷突然增大 B.锚链向船边游荡 发布时间:2018-01-27 09:54 │ 来源:www.tikuol.com 题型:单项选择题 问题: 起锚时,下列那项特征不能用来判断锚离底()A.锚机负荷突然增大B.锚链向船边游荡几下C.锚链标志露出水面D.锚链在水面抖动
题型:单项选择题 Since then the number of people who were addicted to smoking ________ 20%. [ ]A. has reduced to B. reduces byC. has reduced by D. have reduced by 查看答案
题型:单项选择题 根据国际石油开发公司(IMODOC)浮筒的设计要求,在负速为(),流速为()时船舶仍可进行单点系舶安全作业。A.30m/s,5kmB.35m/s,4kmC.20m/s,3kmD.15m/s,2km 查看答案