搜题请搜索小程序“爱下问搜题”
问题 单项选择题

以商品属性为标准来划分市场，可以把市场分为( )。

A．现货市场和期货市场

B．批发市场和零售市场

C．一般商品市场和特殊商品市场

D．消费者市场和组织市场

答案

参考答案：C

单项选择题

髓外肿瘤

A．上行性感觉障碍
B．下行性感觉障碍
C．四肢末端各种感觉障碍
D．分离性感觉障碍
E．阶段性感觉障碍
查看答案
单项选择题

The relational database model requires the data be (110) through programs that don’t rely on the position of the data in the database. This is in direct (111) to the other database mode, where the program has to follow a series of pointers to the data it seeks. A program (112) a relational database simply asks for the data it seeks; the DBMS performs the necessary searches and (113) the information. The (114) on how the search is done are specific to the DBMS and vary from product to product.

A．accessed

B．moved

C．read

D．wrote
查看答案