对鉴别原因未明的病毒性脑炎与功能性精神病，较有意义的检查是（）
A．脑超声检查
B．脑电图检查
C．脑脊液检查
D．脑血管造影
参考答案：C
If an excellent Chinese novel is translated into English, ________ means many more people in the world can enjoy it.
A．as
B．which
C．what
D．that
数控铣床的加工编程中为何要用到平面选择？如何利用零点偏置和坐标轴旋转编程？
