Lisa has handed in her application form ______ ago, and she's going for an interview ______.
A. two weeks, this week
B. three weeks, next week
C. two weeks, next week
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Lisa is applying for a ______.
A. tourist visa
B. student visa
C. work visa
Lisa is not confident about getting the visa because _____.
A. her documents are not well-prepared
B. she was asked to wait for a long time
C. the embassy is very strict about the student visa
水准路线闭合差调整是对观测高差进行改正，方法是将高差闭合差按与测站数（或路线长度）成（）的关系求得高差改正数。
A. 正比例并同号
B. 反比例并反号
C. 正比例并反号D.反比例并同号
用水准仪进行水准测量时，要求尽量使前后视距相等，是为了（）。
A. 消除或减弱管水准轴不垂直于仪器旋转轴误差影响
B. 消除或减弱仪器下沉误差的影响
C. 消除或减弱标尺分划误差的影响
D. 消除或减弱仪器管水准轴不平行于视准轴的误差影响
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