题干
To prevent cybercrime more efficiently, it is important to make new laws and create international standards for them similar to________concerning international airspace.
A：that
B：what
C：one
D：those
答案(点此获取答案解析）
D
2NH3 (g) △H =" -92.0" k
J/mol，将此温度下的1 mol N2和3 mol H2放在一密闭容器中，在催化剂存在时进行反应，达到平衡时，反应放出的热量为（忽略能量损失）（ ）