P是抛物线y2=2x上一点，P到点A(3，103)的距离为d1，P到直线x=-1

世界年平均气温分布图上，南半球等温线比较平直，原因是南半球[ ]

A．地势低平  

B．平原面积广阔  

C．海洋广阔  

D．受太阳光热均匀

在俄国进行1861年改革的同时，中国也正开始了洋务运动，发生在东西方的两次改革的共同点是[ ]

A．都是维护统治阶级利益的需要

B．都是资产阶级性质的改革

C．都取得了成功

D．都发展军事工业，创建海军

风机盘管应逐台进行水压试验，试验压力应为工作压力的( )倍，定压后观察( )min不渗不漏。

A．1.5，2～3
B．2.5，2～3
C．3.5，3～4
D．4.5，3～4

推定全损

OOP languages that create objects, such as (1) and (2) are beginning to take hold as viable tools for programmers. To effectively reuse objects, programmers need a place to store them such as an ODBMS or a RDBMS with object oriented extensions.

Databases that handle object data not only let user store and retrieve (3) data, but also let them store objects created by OOP languages, to facilitate rapid software development and reuse, and let them (4) new multimedia applications combining multiple data types.

RDBMS vendors have developed new extensions to existing DB technology to accommodate the most common forms of (5) data.

（1）是（）

A.C++

B.BASIC

C.PASCAL

D.C