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氧解离曲线呈什么形状( )
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What are the main functions of accounting information?
The users of accounting information can be divided roughly into two groups: those who have a direct interest in the business (D); those who have indirect interest in the business (I). Write the correct letter D or I in the brackets.( ) management( ) creditors( ) investors( ) lawyers( ) brokers( ) tax authorities( ) financial press
Match the professions in column A with the jobs in column B and write the numbers on the line.
S7-200的定时器指令有_____、_____ 和_____ 三种分辨率，分辨率取决于定时器的编号。输入定时器号后，在定时器方框的右下角内会出现定时器的分辨率。
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