为小儿进行大量不保留灌肠时，灌肠筒内液面应高于肛门
A．3～5 cm
B．4～7 cm
C．5～8 cm
D．6～9 cm
E．7～10 cm
参考答案：B
真地吉他林是
A．洋地黄毒苷-(D-葡萄糖)B．苷元-(6-去氧糖)x-(D-葡萄糖)yC．苷元-(D-葡萄糖)yD．美丽毒毛旋花子苷-(D-葡萄糖)E．苷元-(D-葡萄糖)y-(2，6．二去氧糖)x
We are not conscious of the extent of which work provides the psychological satisfaction that can make the difference between a full and empty life.
A．to which
B．in which
C．at which
D．by which
