眶下神经阻滞麻醉时,针尖人眶下孔后应向()进入眶下管。
参考答案:后、上、外方
The train was ______ to arrive at 11:30,but it was an hour late.
A.about
B.likely
C.certain
D.supposed
三厢式轿车车身结构图主要零部件有哪些?