制动性能检测分路试法检测和（）检测两种。
A．人工
B．观察法
C．试验台
参考答案：C
Not only the students but also their teacher ________ seeing the new movie Harry Potter. [ ]
A. like
B. likes
C. wants
D. enjoy
慢性根尖周炎的瘘壁上皮可来自
A．牙板上皮
B．缩余釉上皮
C．Serres上皮剩余
D．Malassez上皮剩余
E．呼吸上皮
