通话状态包括以下哪些通信事件（）

[问答题]Practice 2　　Now many countries find themselves still struggling with problems that are as old as man himself. Basic social problems such as poor or nonexistent health care, and nutrient-deficient diets continue to annoy developing countries, contributing to low life expectancy rates and hampering economic development.　　While it may be true that some countries have found answers to these basic problems of humanity, this does not mean that their societies are problem-free. Indeed, in the solving of age-old problems more economically, advanced societies have found themselves facing new social problems, problems that are a direct outgrowth of their economic advancement. One such problem is that of aging.

[多选题]打破城乡二元结构要从（）几方面入手。

[单选题]据《素问·举痛论》，热气留于小肠，可出现（）

[单选题]修剪片体时，下列哪种对象不能用来作为修剪边界（）

[单选题]下列标志中，可以作为商标申请注册的是（）。

[单选题]竣工决算文件中，主要反映竣工工程建设成果和经验，全面考核分析工程投资与造价的书面总结文件是（  ）。

[问答题]法律对科技的作用有哪些？

[填空题]单位工程完工，（）自评并向甲方提交工程验收报告。

[多选题]企业客户开通网银，需持（）到账户开户网点办理。

[判断题]在波士顿矩阵分析法中，“问题”业务应在短期内优先供给他们所需要的资源，支持他们发展。