节能型建筑与非节能型建筑相比,能源消耗却降低()。
A.48%~50%
B.50%~65%
C.50%~70%
参考答案:B
保全撤消包括()
A.非系统撤消
B.自动撤消
C.人工撤消
D.系统撤消
Which of the following sets of numbers does NOT meet the requirements for a set of probabilities()
A. (0.50, 0.50).
B. (0.25, 0.25, 0.25, 0.25).
C. (0.10, 0.20, 0.30, 0.40, 0.50).