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答案：D
解析：
Recall that there are 2π radians in one revolution of a circle. There are also 360° in one revolution of a circle.
This leads us to the following conversion: 2π radians=360°
If we divide both sides by 360, we have 1°= π/180 radians.
We can use this factor to convert degrees to radians.
The conversion is performed below.
330°=330*1°=330π/180=11π/6
Alternatively, if we divide both sides of the equation 2π radians=360° by 12, we can conclude that π/6 radians=30°.
Since 330° is 11*30°, its measure in radians must be 11π/6.
Either way, we have the following: 330°=11π/6
