What’s the meaning of “prodding” in the video（）
A. encouragement
B. punishment
C. reproach
D. companionship
查看答案
（）不是C02焊时选择焊接电流的根据
A、焊件厚度
B、焊丝直径
C、施焊位置
D、电源种类与极性
It is reasonable for people to pursue a career in fields related ____ their favorite hobbies（）
A. for
B. on
C. to
D. with
It was because of his good performance at the interview ____ he got the job with the big company（）
A. so
B. while
C. what
D. that
粗丝C02焊中，熔滴过渡往往是以（）的形式出现
A、喷射过渡
B、射流过渡
C、短路过渡
D、粗滴过渡
微信支付 
支付宝支付