In the design of machine parts and structural members, ______ must be taken into consideration to en
A) allowablestress
B) designstress
C) factorofsafety
D) safe stress
A) allowablestress
B) designstress
C) factorofsafety
D) safe stress
A、Teenagers
B、The elderly
C、The self-employed
D、The middle-aged
A、Are called debentures.
B、Have specific assets of the issuing company pledged as collateral.
C、Are backed by the issuer's bank.
D、Are subordinated to those of other unsecured liabilities.
E、Are the same as sinking fund bonds.
A) Elastic modulus is also known as Young's modulus
B) The higher the magnitude ofelastic modulus the stiffer the material
C) Elastic modulus can be measured graphically in the elastic region ofthe stress-strain diagram
D) The higher the magnitude of elastic modulus the weaker the interatomic bonding forces
A) < >
B) ( )
C) [ ]
D) { }
A) σ-ε
B) s-N
C) τ-γ
D) T-θ
A) Thermal conductivity ofmaterials has a varied relationship to temperature.
B) Oriented polymers have much lower conductivities than unoriented polymers.
C) Incorporation of element to metals reduces the thermal conductivity.
D) Metals have comparatively high thermal conductivities while polymers have rather low values.
A) Noble gases
B) Active
C) Group 5 elements
D) Stable
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