题目内容

圆轴扭转时,横截面上的内力是扭矩。( )

A. 对
B. 错

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矩形截面杆件扭转时横截面不再为平面。( )

A. 对
B. 错

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How many passengers were on board Asiana Flight 214 when it crashed on landing San Francisco Airport?

A. 307
B. 180
C. 214
D. Not mentioned

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According to the passage, what could be immediately ruled out as a cause of the crash landing of Asiana Flight 214 at San Francisco Airport?

A. Terrorism
B. Pilot errors
C. Mechanical failure
D. Weather conditions

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According to Debarah Hersman, why do so many people feel thankful after the terrifying crash landing?

A. Because all the people on board survived, only some injured.
Because so many people on board survived, only two dead.
C. Because so many people on board were injured, no one dead.
D. Because all the people on board were injured, only two dead.

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圆轴扭转时,横截面上的内力是扭矩。( )

A. 对 B. 错

矩形截面杆件扭转时横截面不再为平面。( )

How many passengers were on board Asiana Flight 214 when it crashed on landing San Francisco Airport?

According to the passage, what could be immediately ruled out as a cause of the crash landing of Asiana Flight 214 at San Francisco Airport?

According to Debarah Hersman, why do so many people feel thankful after the terrifying crash landing?

A. 对
B. 错