竖直角测量时,竖盘指标差的存在可以用盘左、盘右取平均值的方法消除。()
A. 对
B. 错
在进行垂直角观测时,竖盘指标差i=(360-R-L)/2。( )
A. 对
B. 错
Computer technology makes it ____ for people to work from home.
A. harmful
B. serious
C. possible
D. diffcult
"Let me _____ you," said my boss, "you should call me immediately after you arrive at the ariport."
A. ask
B. advise
C. remember
D. remind