正式协议是联合体或合作体各方在标前和中标后履行合同的法律文件，应在()签署完成。A． 发布时间：2017-06-03 19:53 │ 来源：www.tikuol.com 题型：单项选择题 问题： 正式协议是联合体或合作体各方在标前和中标后履行合同的法律文件，应在()签署完成。A．投标定价时B．投标定价前C．投标定价后D．中标后再协商
题型：单项选择题 人们可以对物质从不同的角度进行分类。请根据示例将酒精、醋酸、水、食盐四种物质进行分类，并写出分类依据。 不同类的物质分 类 依 据示 例食 盐常温下食盐是固体，其余是液体分类一 分类二 查看答案
题型：单项选择题 根据对话内容，选择适当的句子补全对话。A. By bike or by bus.B. Nobody, I think.C. Fine, thanks.D. By bike. But my bike is broken today.E. Most of them live near our school, so they usually walk.Jim: Hello, Ann. How are you?Ann: 1 Jim: How do you usually come to school?Ann: 2 Jim: I'm sorry to hear that. How do most students in your class come to school?Ann: 3 Jim: What about the other students?Ann: 4 Jim: Is there anybody by car?Ann: 5 1._____ 2._____ 3._____ 4._____ 5._____ 查看答案