A.3
B.4
C.6
D.8
A.3
B.4
C.6
D.8
A.12
B.4
C.14
D.18
A.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959829318998.png">
B.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959829341277.png">
C.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959829400149.png">
D.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959829417864.png">
A.RA=RB=10kN(↑)
B.RA=RB=10kN(↓)
C.RA=5kN(↑)、RB=15kN (↑)
D.RA=5kN(↓)、RB=15kN(↓)
A.2
B.4
C.-2
D.-4
A.5MPa
B.10MPa
C.15MPa
D.0
A.左支座处
B.跨中处
C.右支座处
D.全梁
A.RA=13.33kN(↑)、RB=16.67kN(↑)
B.RA=RB=15kN(↑)
C.RA=20kN(↑)、RB=10kN(↑)
D.RA=16.67kN(↓)、RB=13.33kN(↓)
A.Q1=0.75P、M₁=3.5Pa
B.Q1=P、M1=3Pa
C.Q1=1.25P、M₁=4Pa
D.Q1=1.5P、M₁=5.5Pa