钨极氩弧焊采用高频高压引燃电弧时，其辐射作用可破坏人体植入的心脏起搏器的正常功能。
参考答案：对
各种易燃易爆的有机溶剂在加热时应用普通电炉，在其上加一个石棉板。 ( )
As one of the best-known American authors of 20th century, Ernest Hemingway wrote all the following novels EXCEPT （）.
A．For Whom the Bell Tolls
B．The Green Hills of Africa
C．The Sound and the Fury
D．The Old Man and the Sea
