题目内容
Task 1 Discuss the following questions after reading the passage.1. Do you think it important to build a “bridge” between two friends’ hearts? Why?2. What are the important qualities when forming a lasting friendship?
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Task 2 Choose the best answer according to the passage.1. According to the passage, for 40 years farming side by side, the two friends shared any of the following except ____________...
设A点为后视点,B点为前视点,后视读数a=1.124m,前视读数b=1.428m,则( )。
B两点之间进行水准测量,得到满足精度要求的往、返测高差为hAB=+0.005m,hBA=-0.009m。已知A点高程HA=417.462m,则( )。
双面水准尺进行四等水准观测时,除要求i角不得超过±20″外,还要求( )。
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