單項選擇題

Tensile stress is a result of two forces acting in（）.

A.opposite directions on the same line，tending to pull the material apart
B.opposite directions on the same line，tending to compress the object
C.opposite directions along parallel lines
D.the same direction along parallel lines

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單項選擇題

Sometimes it is desirable to connect a member both by riveting and welding. Which statement is TRUE concerning this procedure? （）

A.Tearing through the member is more likely in this type connection
B.The weld may be broken by the stresses caused by riveting
C.The weld increases the tensile stress on the rivet heads
D.The welding must be completed before the riveting commences

單項選擇題

Should the vessel have no deratisation certificate at the time of her delivery，she（）be held to be unseaworthy.

A.shall
B.should
C.may
D.would

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Tensile stress is a result of two forces acting in（）.

你可能感興趣的試題

Sometimes it is desirable to connect a member both by riveting and welding. Which statement is TRUE concerning this procedure? （）

Should the vessel have no deratisation certificate at the time of her delivery，she（）be held to be unseaworthy.

Should the vessel have no deratisation certificate at the time of her delivery，she（）be held to be unseaworthy.