题干
.
What I care about most is ____we can raise enough money for the project by the end of this month .
What I care about most is ____we can raise enough money for the project by the end of this month .
A： that
B：if
C：whether
D：where
答案(点此获取答案解析）
C
H＝-632kJ·mol-1。右图为质子膜H2S燃料电池的示意图。下列说法不正确的是（ ）