小红做实验时,把一盏灯两端的电压从4V增加到6V,通过它的电流将从0.5A增加到_______A,这盏灯的阻值为 。
0.75A, 8Ω
It seems that there are people out of work. Something must be done to solve the problem.
A.a great many
B.a great many of
C.a great deal
D.a great deal of
对钢结构防火涂料涂层厚度进行检查时,厚涂型防火涂料的最薄处涂层厚度不低于设计要求的()。
A.70%
B.75%
C.80%
D.85%