【简答题】汽车内燃机工作时产生的高温会引起N 2 和O 2 的反应:N 2 (g)+O 2 (g)?2NO(g),是导致汽车尾气中含有NO的原因之一.某同学为控制污染,对该反应进行研究. (1)如图1表示在T 1 、T 2 两种不同温度下,一定量的NO发生分解过程中N 2 的体积分数随时间变化的图象,根据图象判断反应N 2 (g)+O 2 (g)?2NO(g)为______(填“吸热”或“放热”)反应. (...
【判断题】“固定资产”科目只核算小企业所有固定资产的原始价值。( )
【判断题】交通管理中的车路协同系统,可以利用车载设备获取车辆驾驶者的个人信息。
【简答题】The _____ Colonies were often called the “breadbasket” because they grew so much food.
【多选题】用Na2C2O4标定KMnO4的浓度,满足式()。
B.
n(1/5KMnO4)=n(1/2Na2C2O4)
【单选题】“富贵不能淫、贫贱不能移,威武不能屈”,体现了一个人意志的 ( )品质。
【简答题】_____ colonies grew their own food along with growing three major cash crops: tobacco, rice, and indigo.
【单选题】说明下列哪项为InputStreamReader的正确创建方法?
A.
new InputStreamReader(new FileInputStream(“ a.dat ”));
B.
new InputStreamReader(new FileReader(“ a.dat ”));
C.
new InputStreamReader(new BufferedReader(“ a.dat ”));
D.
new InputStreamReader(“a.dat”);
【单选题】As the population of the colonies grew, the need for a more organized system of mail delivery became ________.
【简答题】____________________ industries develped as as the colonies grew.