为小儿进行大量不保留灌肠时，肛管应插入肛门长度为（）
A.3～5cm
B.4～7cm
C.5～8cm
D.6～9cm
E.7～10cm
参考答案：B
,the more quickly he will learn a foreign language.
A．The stronger motivation will a person have
B．The stronger motivation has a person
C．The stronger motivation a person will have
D．The stronger motivation a person has
XJ-80-1修井机的功率是（）kW。
A、286
B、354
C、364.6
D、387
