旋转偏心块式激振机构可通过调节()改变激振力
A. 偏心块数量
B. 多个偏心块相互间夹角
C. /
D. /
______ is used as a default form of address for women regardless of marital status.
A. Miss
B. Mrs.
C. Mr.
D. Ms.
使用各种尖型的飞行器,其中以固定翼飞机和直升飞机为主,对大面积林区进行以预队发现和消灭森林火灾为重点的各项工作,总称为
A. 森林灭火
B. 航空灭火
C. 航空护林
D. 林业航空
He has hired one of the UK’s top lawyers to ______ him against the allegations.
A. offend
B. defend
C. defeat
D. deflect