【单选题】What is 'proxy measurement' in Paragraph 1 likely to refer to?
A.
Studying the characteristics of glaciers.
B.
Measuring the growth signs of aquatic organism.
C.
Taking advantage of previous pictures.
D.
Using clues left from the past.
【判断题】当石英晶体受沿 光轴( z轴 ) 方向的作用力时, 不会产生压电效应 ,没有电荷产生。
【单选题】下列说法不正确的是( )
B.
分子间氢键的形成除使物质的熔、沸点升高外,对物质的溶解度等也有影响
D.
氢键是一种特殊的化学键,它广泛存在于自然界中
【单选题】在电路设计里,若将两个或更多个发射极开路输出引脚(Open EmitterPin)连接输出,则会怎样:
【单选题】在电路设计里,若将两个或更多个发射极开路输出引脚(Open Emitter Pin)连接输出,则会怎样?
【单选题】In what sense does the writer think that human beings are programmed?
A.
Their characteristics, powers, etc., are fixed before birth.
B.
He thinks a man's abilities are not limited, as a computer's are.
C.
In the sense that human beings will always superior to computers.
D.
Computers must be operated by man, but man can operate by himself.
【单选题】下列说法不正确的是( )
C.
分子间氢键的形成除使物质的熔沸点升高外,对物质的溶解度、硬度等也有影响
D.
氢键是一种特殊的化学键,它广泛地存在于自然界中
【判断题】C 语言中a和’a’含义不同,a是标识符,’a’是字符常量。