女，31岁，头痛，头晕，行走不稳，请结合影像图像选择最可能的诊断()
A．脑桥出血
B．小脑出血
C．小脑梗死
D．脑桥梗死
E．脑膜炎
参考答案：C
–Why do you look so happy?
--I got good grade in English exam. My teacher said .
A. I was hard-working B. I am a good students C. I have worked hard
钻机的旋转系统包括（）和水龙头两大部分。
A.转盘
B.绞车
C.游车
D.大钩
