图示单自由度动力体系自振周期的关系为 ;

A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/148453483835673d9fc41d6db46289767f10bd1d29e32image13.png">;

B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1484534838390a73feaf0e87d4a88ac71f59d4ef03019image14.png">;

C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/14845348384308ac0cbabd803462d9d61fda35001a064image15.png">;

D、都不等。