题目内容

Stage fright is a common example of _______educators call a “lack of confidence” among students.

A. that
B. what
C. which
D. whose

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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。( )

A. 对
B. 错

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

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