4.86×3.2的积有( )位小数;7.68÷ 3的商有( )位小数。
三, 两
—He is always picking up very heavy things just to show ________ his strength.
—What a man!
腹腔镜手术中的人工气腹可产生()
A.高C0血症
B.潮气量下降
C.肺顺应性下降
D.呼吸死腔增大
E.以上都是