试验前应将套管式CT二次端子全部（）。
A.短路
B.接地
C.开路
D.短路并接地
参考答案：D
上牙槽神经丛的内环神经组成是（）
A.上牙槽前神经、中神经、后神经
B.上牙槽前神经、中神经
C.上牙槽前神经、中神经，鼻腭神经
D.腭前神经，鼻腭神经
E.上牙槽前神经、中神经、后神经，鼻腭神经
--What did your teacher say just now?
--He asked me ________this morning.
A. how Tom comes to school
B. why was Tom late for school
C. what time Tom got to school
