问题 问答题 简答题

简述地下定向边陀螺方位测量的步骤。

答案

参考答案:

地下定向边陀螺方位角测量应采用“地面已知边—地下定向边—地面已知边”的测量程序。地下定向边的陀螺方位角测量每次应测三测回,测回间陀螺方位角较差应小于20"。隧道贯通前同一定向边陀螺方位角测量应独立进行三次,三次定向陀螺方位角较差应小于12",三次定向陀螺方位角平均值中误差应为8"

完形填空
One day, a woman walked to work.. On the way, she passed a   41  with a parrot (鹦鹉)         42    near the door. When she stopped   43  at the bird, it said to her, “Hey, you are really ugly!” This   44  the woman very angry. She quickly left the shop and went to   45   .On her way   46  , she passed the   47   pet shop again(再一次). When the parrot saw her, it said, “Hey, you are really ugly!” The woman couldn’t believe    48  rude(粗鲁的)this bird was. She walked into the shop and   49   the shopkeeper that   50   the parrot said it again, she would take it   51   .“I’m sorry. It   52   happen(发生) again,” the shopkeeper said.
The next day, when the woman walked passed the shop, the parrot said to her, “Hey.” She   53   
and looked at the bird. “Yes?” she answered    54  an angry voice (声音). The bird, sitting up and smiling at her, said, “You know    55  I want to say.”
小题1:
A.food shopB.pet(宠物) hospitalC.pet shopD.zoo
小题2:
A.sitB.sittingC.sitsD.to sit
小题3:
A.to lookB.lookC.lookedD.looking
小题4:
A.hasB.makesC.madeD.had
小题5:
A.workB.lookC.buyD.play
小题6:
A.thereB.to the officeC.to the shopD.home
小题7:
A.sameB.differentC.anotherD.one
小题8:
A.whatB.howC.thatD.which
小题9:
A.toldB.saidC.criedD.talked
小题10:
A.ifB.andC.butD.because
小题11:
A.upB.downC.awayD.on
小题12:
A.willB.wouldC.won’tD.didn’t
小题13:
A.wentB.stoppedC.walkedD.left
小题14:
A.atB.inC.onD.for
小题15:
A.whatB.whenC.whyD.where
判断题