Variance analysis include（）
A. Schedule variance
B. Cost variance
C. The schedule performance index
D. The cost performance index
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What is the tractor in this paragraph（）
A. Farm machine
B. The head of truck
C. The part of truck container
D. The part of truck to draw or pull container
5S包括整理、整顿、清扫、清洁、修养。（）
A. 错误
B. 正确
The commonly-used engineering drawings are（）
A. Multi-view projection
B. Cartographical projection
C. Perspective projection
D. Axonometric projection
Can our solution to public speaking fear be used for fears in other areas of life（）
A. YES!!
B. Please choose A
C. Please choose A
D. Please choose A
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