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【单选题】
Part I (2*10=20%) Directions: In this section you will hear ten short conversations. At the end of each conversation, a question will be asked about what was said. Both the conversation and the question will be spoken only ONCE. After each question there will be a pause. During the pause you must read the four choices marked A, B, C and D, and decide which is the best answer. Then mark the corresponding letter on the test paper. 1502-1.mp3:A.
The first person had some fried food at home.
B.
The first person had a flat tire on the way home.
C.
The second person had a flat tire on the way home.
D.
The second person had some fried food at home.
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【单选题】全站仪代替水准仪进行高程测量中,下列选项中说法错误的的是( )
A.
全站仪的设站次数为偶数,否则不能把转点棱镜高抵消
B.
起始点和终点的棱镜高应该保持一致
C.
转点上的棱镜高在仪器搬站时,可以变换高度
D.
仪器在一个测站的的观测过程中保持不变
【单选题】全站仪代替水准仪进行高程测量中,下列选项中说法错误的是( )。
A.
全站仪的设站次数为偶数，否则不能把转点棱镜高抵消
B.
起始点和终点的棱镜高应该保持一致
C.
转点上的棱镜高在仪器搬站时，可以变换高度
D.
仪器在一个测站的的观测过程中保持不变