热辐射能量大小取决于
A.辐射源的温度B.辐射源的表面积C.辐射源的温度和表面积D.辐射源的绝对温度E.辐射源的温度和大气气温
参考答案:A
下列哪种方法不适合车表顽固污责的清除()。
A.抛光机清除
B.有机溶剂清除
C.焦油去除剂清除
D.清洁剂清除
Help has already come from them, but the aid is ____ near what we expected.
A.everywhere
B.somewhere
C.anywhere
D.nowhere