【单选题】假定E为表达式,以下与“while(E);”等价的语句是()。
D.
while(!E>0||!E<0)< /div>
【简答题】Old men and women are hard to live with.
【单选题】苯、环已烷、苯乙烯三种物质的鉴别方法是( )
【单选题】I meet different people every day, old ( ) young, men and women.
【单选题】设E为表达式,以下与 do ... while(E) ;不等价的语句是( )
A.
do … while( ! E ==0 ) ;
B.
do … while(E >0||E < 0 ) ;