【单选题】下列是面向对象设计方法中有关对象的叙述,其中 是正确的。
【单选题】It is hard to predict how science is going to turn out, and if it is really good science it is impossible to predict. If the things to be found are actually new, they are by definition unknown in adva...
A.
thought that they knew a great deal and could solve most problems of science
B.
were afraid of facing up to the realities of scientific research
C.
knew that they were ignorant and wanted to know more about nature
D.
did more harm than good in promoting man's understanding of nature
【单选题】It is hard to predict how science is going to turn out, and if it is really good science it is impossible to predict. If the things to be found are actually new, they are by definition unknown in adva...
A.
will bring about surprising and disturbing results
B.
will produce results which cannot be foreseen
C.
will help people to make the right choice in advance
D.
would surprise the brightest minds of the 18th century Enlightenment
【单选题】It is hard to predict how science is going to turn out, and if it is really good science it is impossible to predict. If the things to be found are actually new, they are by definition unknown in adva...
A.
would surprise the brightest minds of the 18th century Enlightenment
B.
will produce results which cannot be foreseen
C.
will help people to make the right choice in advance
D.
will bring about disturbing results
【多选题】下列关于商业贿赂行为的说法中,正确的是( )。
A.
回扣与正当的折扣、佣金的根本区别在于折扣和佣金必须如实入账,而回扣是账外暗中进行的
【单选题】下面有关对象—关系数据库系统的叙述中,不正确的是( )。
A.
一个对象由一组属性和对这组属性进行操作的一组方法构成
B.
消息是用来请求对象执行某一操作或回答某些信息的要求
【单选题】金属的腐蚀现象非常普遍。下列有关金属腐蚀的叙述中不正确的是( )
A.
金属腐蚀的本质是金属原子失去电子变成阳离子而被氧化
B.
钢铁在发生电化学腐蚀时,若表面水膜呈中性,则正极发生的反应为:2H + +2e - =H 2 ↑
D.
钢铁在干燥的空气里不易被腐蚀,而在在潮湿的空气里容易被腐蚀
【多选题】下列关于商业贿赂行为的说法中,正确的有( )。
A.
商业贿赂行为包括行贿和受贿两个行为,因此具有一定的对合性
D.
折扣和佣金必须如实入账,而回扣是账外暗中进行
【多选题】下列关于商业贿赂行为的说法中,正确的是( )
D.
折扣和佣金必须如实入账,而回扣是账外暗中进行