Perform Quality Control is the process of monitoring and recording results of executing the Quality Plan activities to assess performance and recommend necessary changes. ______ are the techniques and tools in performing quality control.
①Activity network diagram ②Cause and effect diagrams ③Inspection
④Flow chart ⑤Work Breakdown Structure ⑥Pareto chart

A．①③⑤

B．①②④⑥

C．②③④⑤⑥

D．①②③④⑥

不属于青铜的是（）

A．铜锌合金

B．铜锡合金

C．铜铝合金

D．铜铅合金