环保设备按构成可分为（）
A.单体设备和成套设备
B.定型设备和非定型设备
C.通用设备和仪器设备
D.机械设备和仪器设备
参考答案：A
The photo brought me back to the memory of the time in Qingdao, _________ I spent my summer holiday by the seaside with my friends.
A．that
B．when
C．which
D．what
下列说法正确的是( )
A．任何酸与碱发生中和反应生成1 mol H2O的过程中，能量变化均相同
B．同温同压下，H2(g)＋Cl2(g)=2HCl(g)在光照和点燃条件下的ΔH不同
C．已知：①2H2(g)＋O2(g)=2H2O(g)ΔH＝－a kJ·mol－1，
②2H2(g)＋O2(g)=2H2O(l)ΔH＝－b kJ·mol－1，则a>b
D．已知：①C(s，石墨)＋O2(g)=CO2(g)ΔH＝－393.5 kJ·mol－1，②C(s，金刚石)＋O2(g)=CO2(g) ΔH＝－395.0 kJ·mol－1，
则C(s，石墨)=C(s，金刚石) ΔH＝＋1.5 kJ·mol－1
