散射光信号不依赖任何细胞样品的制备技术，称为细胞的固有参数。
参考答案：错
We _____ to wear warm clothes because it's hot inside.[ ]
A. needn't
B. need
C. don't need
D. haven't to
肱骨内、外髁稍前屈，与肱骨纵轴形成向前的前倾角为（）。
A.10°～15°
B.15°～20°
C.20°～25°
D.25°～30°
E.30°～50°
