【单选题】How did John react to his mother's bad temper?
A.
He tried to imagine himself in her place.
B.
He tried not to notice it.
C.
He pretended that he had toothache.
D.
He behaved himself as well as possible.
【简答题】以下关于雷达自动捕获目标的说法中不正确的是( )A. 3
【单选题】When he ran downstairs, he tried to avoid ____by the teacher.
【单选题】Why Kenneth Thompson decided to write his own operating system?
A.
He tried to realize his dream.
B.
Bell Labs required him.
C.
He wanted to start his own business.
D.
He wanted a decent system on which to run his game.
【单选题】He tried to avoid his friends in the street.
【单选题】企业对外销售需要安装的商品时,若安装和检验属于销售合同的重要组成部分,则确认该商品销售收入的时间是( )。
【单选题】下列关于雷达目标捕获功能的说法中不正确的是( )。
C.
捕获前首先检测目标存在,启动对目标的初始跟踪