未知题型 All logistics operations throughout the supply chain also form a link chain for all enterprises, and have a significant impact on the value increment process of the supply chain.

未知题型 岳飞的部队正式番号是“神武后军”。我们常说的“岳家军”是俗称，叫“岳家军”只是宋人的口语习惯。

单项选择题 In 8051 MCU, the pin used in the input/output pin for the special second function is ().