(38)是把对象的属性和服务结合成一个独立的系统单元,并尽可能隐藏对象的内部细节:(39)是指子类可以自动拥有父类的全部属性和服务;(40)是对象发出的服务请求,一般包含提供服务的对象标识、服务标识、输入信息和应答信息等。 (40)处填()。
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男子消渴,小便反多,______,______,肾气丸主之。
Until recently most historians spoke very critically of the Industrial Revolution. They ______ that in the long run industrialization greatly raised the standard of living for the _______ man. But they insisted that its ______ results during the period from 1750 to 1850 were widespread poverty and misery for the _______of the English population. _______ contrast, they saw in the preceding hundred years from 1650-1750, when England was still a _______ agricultural country, a period of great abundance and prosperity. This view, _____ , is generally thought to be wrong. Specialists _______ history and economics, have ______ two things: that the period from 1650 to 1750 was _______ by great poverty, and that industrialization certainly did not worsen and may have actually improved the conditions for the majority of the populace (平民).
A. noted
B. impressed
C. labeled
D. marked
浮点数的一般表示形式是N=2E×F,其中E是阶码,F是尾数。以下关于浮点表示的叙述中错误的是(3),两个浮点数进行相加运算,应首先(4)。 (3)处填()。
A. 阶码的长度决定浮点表示的范围,尾数的长度决定浮点表示的精度
B. 工业标准 IEEE754 浮点数格式中阶码采用移码、尾数采用原码表示
C. 规格化指的是阶码采用移码、尾数采用补码
D. 规格化表示要求交尾数的绝对值限定在区间[0.5,1)