仓库是主要从事配送业务的物流节点。
参考答案：错
After quarreling with her best friends, Mary has got herself into a situation______ she is likely to turn to nobody for help.
A．where
B．which
C．while
D．why
国家标准规定，机械图样中的尺寸确定以（）为单位
A、厘米
B、毫米
C、丝米
D、英寸
