1.(单选题)如图所示,A支座的反力大小为( )kN。

A.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240118/1705563397401160.png">

B.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240118/1705563397419575.png">

C.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240118/1705563397437896.png">

D.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240118/1705563397486832.png">

A.FAX=0、FAY=22.19kN(↑)

B.FAX=0、FAY=52.81kN(↑)

C.FAX=5kN(→)、FAY=22.19kN(↑)

D.FAX=5kN(→)、FAY=52.81kN(↑)

A.RB=35kN(↑)

B.RB=55kN(↑)

C.RB=25kN(↑)

D.RB=45kN(↑)

A.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240118/1705563392094480.png">

B.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240118/1705563392139457.png">

C.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240118/170556339220699.png">

D.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240118/1705563392262918.png">

A.RB=43.75kN(↑)

B.RB=36.25kN(↑)

C.RB=43.75kN(↓)

D.RB=36.25kN(↓)

A.FA=5kN(↑)

B.FA=6kN(↑)

C.FA=8.5kN(↑)

D.FA=9.4kN(↑)

A.RA=13.33kN(↑)、RB=16.67kN(↑)

B.RA=RB=15kN(↑)

C.RA=20kN(↑)、RB=10kN(↑)

D.RA=16.67kN(↓)、RB=13.33kN(↓)

A.RA=RB=20kN(↑)

B.RA=RB=20kN(↓)

C.RA=10kN(↑)、RB=30kN(↑)

D.RA=10kN(↓)、RB=30kN(↓)

A.FBX=0，FBY=5kN(↑)

B.FBX=0，FBY=6kN(↑)

C.FBX=0，FBY=8.5kN(↑)

D.FBX=0，FBY=9.4kN(↑)