A.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959826185499.png">
B.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959826207727.png">
C.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/170495982622821.png">
D.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959826355817.png">
A.内部最大外部最小
B.轴心为零，外边界最大
C.轴心最大，外边界为零
D.内外均匀分布
A.(A)
B.(B)
C.（C）
D.(D)
A.$Z_p=\frac{h\cdotb^2}{4}$
B.$Z_p=\frac{h^2\cdotb}{4}$
C.$Z_p=\frac{b^2\cdoth}{4}$
D.$Z_p=\frac{b\cdoth^2}{2}$
A.θ/16
B.θ/8
C.θ/4
D.θ/2
A.硬材料的圆轴扭转角较小
B.软材料的圆轴扭转角较小
C.材料对扭转角没有影响
D.软材料的圆轴扭转角较大
A.\frac{\pi}{64}(D^4-(\alphaD)^4)
B.\frac{\pi}{16}(D^4-(\alphaD)^4)
C.\frac{\pi}{32}(D^4-(\alphaD)^4)
D.\frac{\pi}{8}(D^4-(\alphaD)^4)
A.一条水平线
B.一条倾斜的直线
C.一条抛物线
D.一条波浪线
A.20Nm
B.30Nm
C.40Nm
D.50Nm
