蛇串疮的中医命名中其中有一个是:()
A.湿疮
B.热疮
C.脓疱疮
D.蜘蛛疮
E.天疱疮
参考答案:D
All the machines stopped _____ with the electricity _____ throughout the factory.
A.working; cut through
B.to work; cut down
C.working; cut off
D.to work; cut up
使用框锯进行圆弧锯割操作时,锯条应该垂直于工件面。( )