The doctor had almost lost hope at one point, but the patient finally ______.
A:pulled out
B:pulled through
C:pulled up
D:pulled over
②鞭炮与氢气球“狭路相逢”
③哄抢氢气球时吸烟
④直接点燃两天前验纯过的氢气发生装置中导出的气体
⑤当氢气体积占氢气和空气总体积的90%时点燃.
如图,已知AB是⊙O的直径,点C在⊙O上,过点C的直线与AB的延长线交于点P,AC=PC,∠COB2=∠PCB.(1)求证:PC是⊙O的切线(2)求证:BC=12AB;(3)点M是弧AB的中点,CM交AB于点N,若AB=4,求MN ·MC的值.
– How does the apple taste? -
下列函数中,既是奇函数又是增函数的为( )
实现上述功能的 VB 程序如下,请回答下列问题: