【单选题】听力原文:M: I was wondering if it would be OK for me to miss the next class. I must go to visit a friend of mine who is in hospital at the moment. W: Of course, Vincent. I’m very sorry to hear about your ...
C.
Sales assistant and customer.
D.
Manager and officer clerk.
【单选题】听力原文:M: I was wondering if it would be ok for me to miss the next class? I must go to visit a friend of mine who is in hospital at the moment. W: Of course, Vincent. I'm very sorry to hear about your ...
C.
Sales assistant and customer.
D.
Manager and office clerk.
【简答题】铝及铝合金焊接前要仔细清理焊件表面,其主要目的是为了防止产生()。
【单选题】I ’ m wondering if I should go to the manager and ask for a few days off.
【判断题】铝及铝合金焊前要仔细清理焊件表面,其主要目的是防止产生气孔。( )
【单选题】使用“画笔工具”时,若想切换成“吸管工具”,应该用哪一个快捷键