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【判断题】
吸烟既不是患肺癌的充分条件，也不是换肺癌的必要条件。A.
正确
B.
错误
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【单选题】---Why ____ go to the supermarket with us ? ---Sorry , he is doing his homework now.
A.
not let Tom
B.
don’t let Tom
C.
not let Tom to
D.
not to let Tom
【简答题】阅读理解。 Life in 2060 Let us suppose it is now about A.D. 2060. Let's imagine it is about fifty years from now. Of course, things have changed and life is very different. Voyages to the moon are being ma...
【多选题】水平角观测方法有测回法和方向观测法，其观测限差有所不同，方向观测法的限差有( )。
A.
半测回归零差
B.
两个半测回角值之差
C.
2C互差
D.
各测回角值之差
E.
各测回方向值之差
【单选题】Life in 2060 Let us suppose it is now about A.D. 2060. Let’s make believe(假设；虚构) it is about sixty years from now. Of course, things have changed and life is very different. Voyages to the moon are be...
B.
Many other animals.
C.
Many plants.
D.
A sea. 小题2:What will people eat then according to the passage? A．Biscuits in pill form. B．Foods in gas form. C．Foods in water form. D．Foods in pill form. 小题3:Why are people largely vegetarians in 2060? A．Because they don’t eat meat . B．Because doctors advise them not to eat meat. C．Because the number of animals decreases. D．Because all the animals have died of diseases.
【简答题】完成测回法 水平角观测记录表格计算,并说明最终水平角的大小。 测回法水平角观测记录.docx
【多选题】水平角观测方法有测回法和方向观测法，水平角观测的测回法限差有半测回较差和测回间较差，方向观测法的限差有______。
A.
半测回归零差
B.
半测回较差
C.
同方向各测回互差
D.
各测回角值互差
E.
一测回互差
【简答题】Let us go now, _____?
相关题目：
【多选题】水平角观测方法有测回法和方向观测法，其观测限差有所不同，方向观测法的限差有( )。
A.
半测回归零差
B.
两个半测回角值之差
C.
2C互差
D.
各测回角值之差
E.
各测回方向值之差