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【简答题】
指导幼儿的学习与发展、评定幼儿成长发展是幼儿教师的权利。（ ）
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【简答题】3-17 容器内有一隔板,隔板下部为宽 的正方形孔,恰好被直径 的圆柱体堵塞。隔板两侧注有两种液体: , ; , 。求圆柱体所受静水总压力。
【单选题】After the boat is at the top of the davit heads，the davit arms begin moving up the tracks and are stopped by the（）.
A.
hoist man
B.
limit switch
C.
brake handle
D.
preventer bar
【单选题】All the readers were by the story. [ ]
A.
moving; moved
B.
moved; moving
C.
moving; moving
D.
moved; moved
【多选题】What are the possible strokes of engine while the piston is moving from top to bottom?
A.
Intake stroke
B.
Compression stroke
C.
Power stroke
D.
Exhaust stroke
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