某纳税人生产机械产品应缴纳增值税，其纳税义务产生于( )。
A．进行税务登记时
B．销售行为发生时
C．进行纳税申报时
D．税务机关征税时
参考答案：B
急性阑尾炎的诸多症状中主要的是（）。
A.恶心呕吐
B.低热
C.转移性右下腹痛
D.便秘
E.食欲减退
The initiating process group consists of the processes that ______ .
A．facilitate the formal authorization to start a new project or a project phase
B．deploy risk mitigation strategies
C．establish and describe the need for a project selection process
D．approve the market analysis to ensure resolution of contract disputes
