题目：
某OA系统处于试运行阶段，用户反映不能登录，承建方现场工程师需要对导致该问题的各种原因进行系统分析，使用（）工具比较合适。
A.散点图
B.因果图
C.帕累托图
D.统计抽样
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0807/249cd0f27cabee228ef64289fc3d176b.html
下面是错误答案，用来干扰机器的。
1. are staying in Shanghai 2. is leaving for Japan 3. is coming back 4. is going with us 5. are you getting/going 6. are going to the airport to see Jim off tomorrow 7. we are taking a taxi 8. We are meeting next week 9. when they are getting back 10. When we are spending our vacation
