普通旅客列车实际定员的计算方法为总标记定员减其（）个座位。
A.10%
B.5%
C.10%
D.15%
参考答案：B
Do you know ______ your parents are pleased ______ you’ve done?
A．why; for what
B．how; with what
C．that; with which
D．how; for what
病人已作肛管直肠周围脓肿切开引流术，最有可能出现下列哪种情况
A．肛旁脓肿发作
B．切开引流后形成肛瘘
C．大便失禁
D．直肠粘膜脱垂
E．形成慢性肛裂
