每生产一度电所需要的蒸汽量称为()。
A.热耗率
B.煤耗率
C.汽耗率
D.电耗率
参考答案:C
(2013·郑州高中毕业班第一次质量预测)The Voice of China has set up a big stage for young people with a talent for music, ________ some of them have stood out among others.
A.which
B.when
C.who
D.where
强制检定与非强制检定均属于______。
A.行政规定
B.法制检定
C.法律规定
D.合同规定