A:a+b<-1
B:ab<1
C:ab<1
D:ab>1
— ________ is the weather in Linshu?— ________ windy.
①I2(g)+H2(g)⇌2HI(g)△H=﹣9.48kJ•mol﹣1
②I2(s)+H2(g)⇌2HI(g)△H=+26.48kJ•mol﹣1.
下列判断正确的是( )
甲地(40°N,20°E)位于乙地(20°N,40°E)的方向( )