乙醚中含有水，能将试样中糖及无机物抽出，造成测量脂肪含量偏高的误差。
参考答案：对
The parties to the contract have equal legal status, and neither party may impose(强加) its will on _____.
A．others
B．the other
C．either
D．another
什么是分类数据和顺序数据？两者有何异同？
