救生圈上要系有回收绳,长度要合适,一般要大于存放点至水面距离的()倍,才能满足救生条 发布时间:2019-07-30 14:57 │ 来源:www.tikuol.com 题型:单项选择题 问题: 救生圈上要系有回收绳,长度要合适,一般要大于存放点至水面距离的()倍,才能满足救生条件且状况良好。A.0.5B.1C.1.5D.2
题型:单项选择题 Dr, Robert Bell went to New York , bought some books ___ his daughter.A. visiting B. to visit C. and visited D, visited 查看答案