题目内容

What does the professor mean when he says this

A. GPS is very useful in military and civilian fields.
B. GPS is very good at data calculation.
C. GPS is a modern way to transit signals.
D. It is very difficult for GPS to determine position.

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考生文件夹下有一个数据库文件“samp2.mdb”，其中存在已经设计好的表对象“tCourse”、“tSinfo”、“tGrade”和“tStudent”，请按以下要求完成设计。创建一个查询，将所有学生的“班级编号”、“姓名”、“课程名”和“成绩”等值填入“tSinfo”表的相应字段中，其中“班级编号”的值是“tStudent”表中“学号”字段的前6位，将查询命名为“qT4”。

What aspect of GPS does the talk mainly discuss

A. What it is made up of and its shortcomings
B. How it works and its attributes.
C. The history of its development.
D. How it is different from other technologies.

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在考生文件夹下的“samp1.mdb”数据库文件中建立表“tCourse”，表结构如下表所示。字段名称数据类型字段大小格式课程编号文本 8 课程名称文本 20 学时数字整型学分数字单精度型开课日期日期/时间短日期必修否是/否是/否简介备注

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What does the professor imply when he says this

At least 4 satellites can make 3D position.
B. To make 3D position three satellites are enough.
C. At least 4 satellites can make 2D position.
D. The GPS receiver is very difficult to lock.

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What does the professor mean when he says this

A. GPS is very useful in military and civilian fields. B. GPS is very good at data calculation. C. GPS is a modern way to transit signals. D. It is very difficult for GPS to determine position.

What aspect of GPS does the talk mainly discuss

What does the professor imply when he says this

A. GPS is very useful in military and civilian fields.
B. GPS is very good at data calculation.
C. GPS is a modern way to transit signals.
D. It is very difficult for GPS to determine position.