【判断题】储备浮力的大小常以夏季满载排水量的百分数表示
【单选题】—Mom, I am late. I have to run off to the school. —Dear, you needn’t do that. Today is Sunday.
【单选题】I’m sorry my memory has ______ , for the prices of the things have gone up.
【单选题】I have run out of the salt. I need to buy some now.
【单选题】I have _______ sugar, so I have to buy some.
【判断题】储备浮力的大小常以满载排水量的百分数表示。
【判断题】I have run out off my money.
【单选题】I need to go back home before I _________ money.
【单选题】下列功能中,哪一个最好地描述了OSI模型的数据链路层( )