根据表格内容，判断正误。
LOST
My school student card.
My name is James.
Please call 7358-6623.
Thank you very much!
FOUND
A raincoat.
It's blue.
Please call the Lost and Found.
Tel: 7267-8834
Michael: Is that your watch at the Lost and Found?
Steve: Is this your schoolbag? The bag is black. Call the Lost and Found. Tel: 7267-8836
ice cream
的固定斜面上。滑块与斜面之间的动摩擦因数为
。若滑块与斜面之间的最大静摩擦力合滑动摩擦力大小相等，重力加速度为g，则 （ ）