—Where did you get this book?

—Oh, I ______ it in the bookshop when I was looking for another one.

A．came across

B．found out

C．looked for

D．came up

起重机防风防爬装置主要有：()。P111

A.夹轨器

B.安全钩

C.锚定装置

D.回转锁定装置

E.铁鞋