A:the more for life are you equipped
B:the more equipped for life you are
C:the more life you are equipped for
D:you are equipped the more for life
生活中的下列现象,能说明气体的溶解度随压强变化而变化的是( )
设F1,F2是双曲线C:x2a2-y2b2=1(a>0,b>0)的两个焦点,P是C上一点,若PF1+PF2=6a,且△PF1F2的最小内角为30°,则C的离心率为( )
关于地球大小的叙述,不正确的是( )