颅底骨折时常伴有( )
A．咬合错乱 B．颅面分离 C．耳鼻出血 D．复视 E．张口受限
参考答案：C
The use of the new technology will have a profound effect on schools.
A．negative
B．positive
C．p
D．useful
为保证航班正点，加油员可进行飞机仪表操作。
