在填写闭合导线坐标计算表格时，不需要计算求和的元素是（）
A. 内角和
B. 角度改正数
C. 边长
D. 方位角
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△X12=D12×（）α12，△Y12=D12×（）α12。
A. sin；cos
B. sin；tan
C. cos；sin
D. cos；tan
K值的含义是（）。
A. x坐标增量闭合差
B. y坐标增量闭合差
C. 导线全长闭合差
D. 导线全长相对闭合差
Which of the following works does not associate with the category of beauty?
A. Peacock Dance
B. Swan Lake
C. Mona Lisa
D. Tao Te Ching
Who is the author of the art work "Water Lilies" that Mrs. Wang shows off to her friends in the TV series "Thirty and Yourself ?
A. Van Gogh
B. Monet
C. Da Vinci
D. Picasso
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