糠虾莹虾的区别:糠虾:();莹虾:()。
参考答案:头胸甲后端凹陷;体侧扁,头部从上唇前端向前延伸成细筒形
________ cold, he covered his blanket, _____ only his arms _____ .
A.Felt, left, uncovered
B.Feeling, left, uncovered
C.Feeling, leaving, uncovered
D.Felt, left, uncovering
避雷线和避雷针的作用是什么?避雷器的作用是什么?