多项选择题

There are various control surfaces located on the wings，such as the leading edge & the trailing edge flaps, the ( ), the ( ) and the ( ).
A、slats
B、ailerons
C、spoiler
D、stringer

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单项选择题

Which statement regarding reentry shock is incorrect? A. This phase may also be called reverse cultural shock. B. Reentry shock is typically shorter than cultural shock, but may vary depending on the adjustment made in the foreign country. C. For the expatriates, transition to home culture is short and usually problem-free. D. Children of expatriates may encounter readjustment problems when they find that the education they received abroad is not comparable to that of U.S. schools.

不定项选择

商誉，是指合并成本与购买日取得的被购买方可辨认净资产账面价值之间的差额。

A．错误
B．正确