已知函数f(x)=ex-2x+a有零点,则a的取值范围是( )。
It's important for us to employ a word or a phrase according to the _________ in language studies. [ ]
A. situation
B. expression
C. condition
D. translation
对于合伙协议约定不明确的事项,实行合伙人一人一票并经全体合伙人过半数通过的表决办法。( )