题目内容
可用碱水提取、酸水沉淀法提取分离
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案例分析题As mentioned above, C imposes relatively few built - in ways of doing things on the program- mer. Some common tasks, such as manipulating （1） , （2）, and doing （3） (I/O), are performed by calling on library functions. Other tasks which you might want to do, such as creating or listing directories, or interacting with a mouse, or displaying windows or other （4） elements, or doing color graphics, are not defined by the C language at all. You can do these things from a C program, of course, but you will be calling on services which are peculiar to your programming environment （5）, processor, and operating system) and which are not defined by the C standard. Since this course is about portable C programming, it will also be steering clear of facilities not provided in all C environments. （2）处应选择（）
核酸的基本组成单位是
按照脏腑的生理功能特点，可分为 ① 、 ② 、 ③ 三类。
“中焦如沤”主要指脾胃的腐熟、运化功能言。( )
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