原氯压力逐渐升高的原因是什么？
参考答案：
1.R22吸气温度升高
2.原氯纯度低
3.盐酸合成岗位产量低
During his life time, Edison ______ 1093 inventions.[ ]
A. worked
B. made
C. did
D. gave
叙述并指出手五里、附分、环跳的定位
