有一种节日小彩灯上串联着20只小灯泡， 如果电源插头处的电流为200 mA，则通过小灯泡的电流是________A．
0.2
防喷措施和（），职责要为钻台所有操作人员所熟悉，并张贴在钻台上。
The reason ______he was late was _____he got up late
A．which , because
B．why , that
C．that, that
D．why ,because
