平面内的投影面平行线有三种:平面内的()、()、()。
Which the following statement is NOT the principles mentioned in the video?
A) Being clear with the purpose of your call.
B. A) Being clear with the identity of the person you are talking.
C. A) Trying to talk to the ‘BOSS’.
D. A) Talking through all the details.
Facial expressions are not important at all since people cannot see my face on the phone.
A. 对
B. 错
直接材料的价格标准不包括材料的( )。
A. 买价
B. 运杂费
C. 验收入库后的仓储费
D. 保险费