* * 损伤后,有排尿困难,导尿管能插入膀胱,应将导尿管留置多久
A.10~14天
B.21~28天
C.1~3天
D.4~5天
E.30~40天
参考答案:A
— Could I use your pen, please?
— .[ ]
A. No
B. Certainly
C. Excuse me
简述古代义训的局限性。