管理风险指管理运作过程中因信息不对称、管理不善、判断失误等影响管理科学性而带来的风险。
A、正确
B、错误

单项选择题系数矩阵 A 只要非奇异，我们就可以用Gauss 变换得到系数矩阵 A 的三角分解。 A、正确 B、错误

单项选择题If a building is one or two stories in height, having overhanging eaves with exposed rafters or braces, prominent gabled or shed roofed dormers, this is a _____. A、sullivanesque building B、prairie school building C、bungalow D、commercial building