检查滚珠轴承的的内容有哪些？
参考答案：
滚珠及外圈有无裂纹、起皮和斑点等缺陷，并检查其磨损程度；检查滚珠轴承外圈与轴承座、内圈与轴颈的配合情况。
—Was it under the tree _______ you were away talking to a friend?
—Sure. But when I got back there, the bike was gone.
A．that
B．where
C．which
D．while
报关单上“商品名称、规格型号”栏的填写内容应包括中文商品名称、规格型号，商品的英文名称和品牌，这几者缺一不可。 ( )
