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一、我已经能熟练地操作计算机了,还学什么? 二、计算机能做什么? 三、如何把计算机做为求解问题的工具,为我服务终身?
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n contrast to alcohols with their rich chemical reactivity, ethers (compounds contain- ing a C-0-C unit) undergo relatively few chemical reactions. As you saw wher we discussed Grignard reagents in Chapter 14 and lithium aluminum hydride reduc- tions in Chapter 15, this lack of reactivity of ethers makes them valuable as solvents in a number of synthetically important transformatio. In the present chapter you will learn
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4.1 There are four C. H, alkyl groups, and so there are four C. H, CI alkyl chlorides. Each may be named by both the functional class and substitutive methods. The functional class name uses the name of the alkyl group followed by the halide as a second word. The substitutive name modifies the name of the corresponding alkane to show the location of the halogen atom
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#include #include
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SOLUTIONS TO TEXT PROBLEMS 19.1 (b) The four carbon atoms of crotonic acid form continuous chain. Because there is a double bond between C-2 and C-3, crotonic acid is one of the stereoisomers of 2-butenoic acid. The chem
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#include #include struct snode char name[ 15 truct snode*next struct snode *create list(int n)
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#include struct Worker Int num char name[20] maino float sum=0 truct Worker*p, per[3]: printf(\请输入三名职工的编号、姓名、性别和工资:in\)
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#include struct Student float score struct Student sa={\李飞\,100},sb={\于凡\,72.5}; struct Student*p,[3}{\宋石\,93.5} s[lFsa; *结构体变量(整体)赋值*
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#include struct student Int num Int age; float score
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#include maino char name[ 201 float score printf\输入姓名:\) gets(stu name);
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