吊钩开口达原尺寸的10%时应报废,其检验工具()。
A、游标卡尺
B、千分尺
C、塞尺
参考答案:A
sometimes keeps her awake at night is Tom is getting more and more quiet at home.
A.That;which
B.It;that
C.Whether;what
D.What;that
如何对差压变送器进行密封性检查?