髁突颈部骨折时，最可能伤及（）
A.翼从
B.上颌动脉
C.面动脉
D.颈内动脉
E.颈外动脉
参考答案：B
I want to _________ at the meeting, but in the end I _________ nothing.
A．speak; said
B．say; spoke
C．talk; said
D．speak; told
试分析电除尘器内部发生爆燃的原因有哪些？如何预防？
