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【单选题】
关于液压装置工作油箱的下列说法中错误的是 。A.
通气孔应设滤网
B.
箱底宜做成凹形
C.
泄油管出口可在油面之上
D.
内隔板应高出油面
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【单选题】 Passage AAfter the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: The damage and death toll could have been much worse.More than 60 people died in t...
A.
A
B.
B
C.
C
D.
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