【单选题】衡量计算机的性能时,除了用其运算速度、字长等主要指标外,还用( )来表示。
【单选题】衡量电子计算机的性能时,除了用其运算速度、字长等主要指标以外,还用哪项来表示____。
【单选题】It can be concluded from the study that______.
A.
the bilingual speakers perform. worse than those who only know one language
B.
learning a language may have the risk of Alzheimer' s disease or smoking habits
C.
people have to speak a new language fluently in order to gain some benefits
D.
people can start to learn a new language later in life and still get the benefits
【单选题】The following statements can be concluded from the study made by Charlotte EXCEPT that______.
A.
forgiving can make people calm down.
B.
when people recall a past hurt, they tend to be more irritated
C.
there is no link between forgiving and a heart disease
D.
when people recall a past hurt, they tend to have a higher blood pressure and heart rate
【单选题】The Harvard study has concluded that ______.
A.
children never benefit from ear surgery.
B.
tympanostomy tubes result in deafness.
C.
some surgeons are too eager to operate.
D.
ear tube operations are too expensive.
【判断题】( )电容元件具有通高频、阻低频的性能。
【简答题】一般而言,国际经济学可以分为和两个部分。