扁錾的用途?
参考答案:
用来切除金属材料的凸缘毛制,飞边和分割材料, * * 面的粗加工等。
声环境影响评价工作等级一般分三级,对应的工作要求分别为()。
A.详细评价、简要评价、一般评价
B.详细评价、一般评价、简要评价
C.具体评价、一般评价、概括评价
D.具体评价、简要评价、概括评价
小题1: We need to d________ when we should start the project.
小题2:—I’m sorry to bring you so much ________ (麻烦). —It doesn’t matter.
小题3: There are many ________ (乘客) on this bus. Let’s wait for the next one.
小题4: Who can________ ________ (解出) this maths problem?
小题5:. He realized that his deskmate was ________ ________ ________ (看不见了).