电缆护套伸入器壁长度要符合5mm—15mm的要求，小于（）mm为失爆，大于（）mm为不完好。
参考答案：5 15
An analyst does research about financial principles. Which of the following financial principles is most accurate to describe the requirement that each material class of similar items should be shown separately on the financial statements（）
A. Aggregation.
B. Comparative information.
C. No offsetting.
