侵袭性操作的高危因素()
A.留置导尿管
B.静脉导管
C.气管插管
D.器官移植
E.吸取痰液
参考答案：A, B, C, D, E
________in a famous university is what most students wish for.
A．To educate
B．Educated
C．Being educated
D．Educating
影响课堂管理的因素有哪些？
