问题
选择题
You will find what great benefit the computer you own can be________each time you use it to help you
work.[ ]
A．for
B．at
C．on
D．of
答案
答案：D
搜题请搜索小程序“爱下问搜题”
You will find what great benefit the computer you own can be________each time you use it to help you
work.[ ]
A．for
B．at
C．on
D．of
答案：D
。飞机上的测量仪器可在1200的视角范围内测量，如图所示，试计算飞机每小