线切割加工中常用的电极丝有();();()。其中钼丝应用最广泛。
参考答案:钼丝、铜丝、钨丝
小题1:What you have just read is a _______.
A.note
B.report
C.schedule
D.poster小题2: What is going to take place on 2 February, 2013?
A.A big event to welcome a Chinese new year.
B.A social gathering to raise money for wildlife.
C.A party for close friends to meet and have fun.
D.A meeting of Kwun Tong High School students.小题3:How much do you have to pay in total if four of you go together?
A.$20.
B.$40.
C.$60.
D.$80.小题4:Which of the following statements is true?
A.Tickets are sold in Kwun Tong High School.
B.It's unnecessary to take soft drinks with you.
C.Free digital cameras are provided for everybody.
D.Festival food will be served without extra charge.
一般不需要全身使用抗生素的是()。
A.疖
B.痈
C.丹毒
D.急性化脓性腱鞘炎
E.气性坏疽