【单选题】Passage 3 Question 22 to 25 are based on the passage you have just heard. question 22.mp3:
A.
She invested in stocks and shares on Wall Street.
B.
She learned to write for financial newspapers.
C.
She developed a strong interest in finance.
D.
She tenderly looked after her sick mother.
【简答题】用555定时器构成一多谐振荡器,要求输出信号频率为4 kHz,占空比为60%,试画出电路,确定各元件参数值。
【单选题】我国古代第一所官办的书院是______________________。
【单选题】列车定位过程中要使用列车车轮直径作为数据的定位方式是?
【单选题】车辆行人遇到灯光信号、交通标志与交警指挥不一致时,应服从
【多选题】某企业2018年年末的产权比率为40%,则下列说法中正确的有()。
【简答题】激光的物理学效应有( )、( )、( )。