若截面2处压力水头和截面1处压力水头相同,截面2处位置水头小于截面1处位置水头,则截面2的速度水头()截面1的速度水头。
A.小于
B.大于
C.等于
D.A或B或C
参考答案:D
超临界萃取
—Are you going to the football game this weekend?
—Probably not. The tickets are __________ for me.
A.terrible expensive
B.so much expensive
C.far too expensive
D.highly expensive