【多选题】下列选项正确的有( )。
A.
在火车上观看窗外开阔的原野,会感到远处景物朝火车前进的方向旋转
B.
理论上一台抽水机最多能把20米深的水抽到地面
C.
管乐器的发声原理是管内空气柱的振动,当室内温度升高时管乐器的音调变高
D.
悬浮列车既利用磁极异性相吸又利用同性相斥的原理
【单选题】What is the woman's advice for dealing with Jason's problem?
A.
The man had better call the school teachers for help.
B.
The man should start looking at Jason's Facebook
C.
The man can visit a woman with the same problem.
D.
The man needs to take Jason to do some assessments
【单选题】正常一岁以下婴儿的脉搏次数平均在:( )
【多选题】按EOS的整体运作程序分划分,大致可以分为( )
【单选题】毛笔素描的纸张选用( )、毛边纸或表面起伏的纸张。
【判断题】Jason's swimming back to safety was quite smooth, because many swimmer helped them.