商品出库外包装标记刷唛要求做到简明清晰，易于辨认就可以了。
参考答案：错
My friend has lost his blue bike. This one his. [ ]
A. maybe
B. must be
C. might be
D. is
发动机水冷却系节温器的作用是用来改变冷却水的循环路线及（）。
