皮皮学，免费搜题
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【单选题】
Part A Directions: You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer ― A, B, C or D, and mark it in your test booklet. You will have 15 seconds to answer the question and you will hear each dialogue ONLY ONCE. 听力原文：W: How much time did you have for drawing this picture? M: We were given 3 hours, but I finished 20 minutes earlier. How long did it take the man to finish drawing the picture?A.
3 hours.
B.
Three hours and twenty minutes.
C.
Twenty minutes.
D.
Two hours and forty minutes.
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皮皮学刷刷变学霸
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【简答题】安装低压开关及其操作机构时，其操作手柄中心距离地面一般为();侧面操作的手柄距离建筑物或其他设备不宜小于()。
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