(三)题5-9~题5-12,根据三视图画出正等轴测图。
参考答案:
Some students can’t go to the show ______ the exam this week.
A.because
B.because of
C.if
D.so
工艺守则通常按工种或工序进行编制,是工艺纪律性文件。( )