一般的光敏电阻有何特性?
参考答案:
光线越强,阻值越小;光线越弱、阻值越大。
I don’t like Tom’s way of behavior, but ________ I admire( 钦佩) his great knowledge.
A.in other words
B.on the other hand
C.for one thing
D.as a result
防止苯并(a)芘危害的措施是什么?