—Didn't you see the sign "No parking!" on the right?
—Sorry, I didn't. But now I know parking ____________ here.
A: wasn't allowed
B:isn't allowed
C:won't allow
D:doesn't allo
①有坚持梦想的执著精神
②有不懈奋斗的刻苦精神
③发挥优势,并扬长避短
④规划当下,从现在做起
如图所示是酒精浓度检测仪及其原理图,它实际上是由一节干电池(电压不变),一个气敏电阻R2(相当于阻值随酒精气体浓度变化的变阻器,酒精浓度越大阻值越小)与定值电阻R1及一个电压表组成.驾驶员呼出的酒精气体浓度越大,则( )