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【判断题】
家庭经济困难学生认定工作原则上每学年进行一次。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Rudder is a hinged moveable part on the trailing edge of the vertical stabilizer for airplane ____(nose to the left or right).
A.
pitch
B.
landing
C.
yaw
【简答题】战国时期的帛画（ ）是我国目前可以看到的最早的古代绘画实物。
【单选题】On the Wright brothers' first successful aircraft, the horizontal stabilizer was placed _______ the wings.
A.
beside
B.
in front of
C.
behind
【简答题】(英译汉)The tail assembly or empennage consists of two sets of suces, usually one horizontal and one vertical. The vertical element has a fixed part called the vertical stabilizer and a movable part c...
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