如图是非洲草原犬鼠洞穴的横截面示意图．洞穴有两个出口，一个是平的，而另一个则是隆

You are managing tooling for an aircraft part．Your team members tell you that they found a few defective parts．When you asked them the reasons for the defect，they mentioned that it could because of several reasons including the material used，the measurement system，inaccurate tolerances in the machine or other factors．To help them to illustrate better how various factors might have contributed to the defect，you will （）．

A．use a control chart

B．create a flowchart

C．draw a fishbone diagram

D．draw a Pareto chart

下列叙述中正确的是(　　)

A．向含有CaCO₃沉淀的水中通入CO₂至沉淀恰好溶解，再向溶液中加入NaHCO₃饱和溶液，又有CaCO₃沉淀生成

B．向Na₂CO₃溶液中逐滴加入等物质的量的稀盐酸，生成的CO₂与原Na₂CO₃的物质的量之比为1∶2

C．等质量的NaHCO₃和Na₂CO₃分别与足量盐酸反应，在同温同压下，生成的CO₂体积相同

D．向Na₂CO₃饱和溶液中通入CO₂，有NaHCO₃结晶析出

证见治疗牙痛，头痛，齿松牙衄，烦热干渴，舌红苔黄而干，宜用的方剂是（）

A.玉女煎

B.凉膈散

C.龙胆泻肝汤

D.清胃散

E.芍药汤

《水浒传》中宋江率军战胜方腊以后，在回师途中（）坐化了

如何衡量旅游消费效果？