问题
单项选择题
下列选项中，哪一项是X线管支持装置灵活运动的方向数( )。
A．4
B．5
C．6
D．7
E．8
答案
参考答案：C
解析： X线管支持装置灵活运动的方向包括前、后、上、下、左和右六个方向。
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下列选项中，哪一项是X线管支持装置灵活运动的方向数( )。
A．4
B．5
C．6
D．7
E．8
参考答案：C
解析： X线管支持装置灵活运动的方向包括前、后、上、下、左和右六个方向。
| 完形填空。 | |||
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