【简答题】5 月 18 日,以银行存款支付所欠税金 48000 元。
【单选题】为什么要使用支付宝呢,哪些不是支付宝的好处?
【简答题】已知497°C时,恒容条件下,以压力为pθ的纯NO2为起始物进行反应:2NO2(g)= 2NO(g)+ O2(g),平衡时NO2的转化率为53.5%。(1)求 ;(2)仍在恒容条件下反应,欲使NO2的转化率达到60%,需改变系统容积为原来的多少倍?
【判断题】氧弹式量热计测定物质的燃烧热是在恒容条件下进行的。( )
【单选题】Earl was balancing himself on top of the fence when he lost his ______ and fell off.
【单选题】All flights because of the snowstorm, many passengers could do nothing but take the train .
【判断题】Passengers could buy tickets from any hotel.