题目内容

The flexibility of the compression bar intensively reflects which factors of the compression bar will affect the critical stress.

A. Length, constraints, section size and shape
B. Material, length and constraints
C. Material, constraints, section size and shape
D. Material, length, section size and shape

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Which measure can not improve the stability of slender compression bar.

A. Increase the cross-sectional area of the compression bar
B. Increase the surface finish of the compression bar
C. Reduce the flexibility of the compression bar
D. Materials with large elastic modulus shall be selected

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Buckling of the strut will occur in the longitudinal plane of ().

A. Maximum length factor
B. Minimum section inertia radius
C. Maximum flexibility
D. Minimumflexibility

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The compression bar belongs to a slender bar. Whether it is a medium long bar or a short thick bar is determined according to the () of the compression bar.

A. length
B. Cross section size
Critical stress
D. flexibility

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Round section compression bar hinged at both ends, 1m long and 50mm in diameter. Its flexibility is ()

A. 60
B. 66.7
C. 80
D. 50

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The flexibility of the compression bar intensively reflects which factors of the compression bar will affect the critical stress.

A. Length, constraints, section size and shape B. Material, length and constraints C. Material, constraints, section size and shape D. Material, length, section size and shape

Which measure can not improve the stability of slender compression bar.

Buckling of the strut will occur in the longitudinal plane of ().

The compression bar belongs to a slender bar. Whether it is a medium long bar or a short thick bar is determined according to the () of the compression bar.

Round section compression bar hinged at both ends, 1m long and 50mm in diameter. Its flexibility is ()

A. Length, constraints, section size and shape
B. Material, length and constraints
C. Material, constraints, section size and shape
D. Material, length, section size and shape