风险应对措施的种类有哪些？()

ABC company commonly used Sum of the Years method to calculate depreciation on assets. They purchased a computer which cost $15,000, knowing they can sell it at the end of three years for $3,000. How much depreciation is taken the third year？

项目特别容易招致风险，因为——（）

采购单是什么类型合同的例子？

你在加拿大的某省工作，按照合同应每天到政府事务办公室去。上个月因为大风雪天气你有3天没去。你的缺席是可被接受的，因为合同中有如下的条款——（）