【单选题】两方位定位时,仅考虑偶然误差的影响,位置线交角θ最佳值为 。
【单选题】By retracting and tightening the belt strap, the ( ) compensates for belt slack and film-reel effect in a collision.
C.
shoulder belt tightener
【单选题】The belt design usually includes: lap belt, lap shoulder belt, _______.
【单选题】两方位定位时,仅考虑偶然误差的影响,位置线交角θ最佳值为 。