為使單缸柴油引擎在天氣寒冷時易於起動,下列哪一項措施是正確的?
乙級題目1-80
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KG - 5th Grade
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Medium
瑞呈洪 瑞呈洪
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
為使單缸柴油引擎在天氣寒冷時易於起動,下列哪一項措施是正確的?
(1) 延遲噴油時間
(2) 加少量機油到汽缸裏
(3) 降低噴油壓力
(4) 提早噴油時間
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
農用引擎空氣濾清器失去過濾功效時,最易磨損之機件為
(1) 主軸承
(2) 活塞環與汽缸
(3) 曲軸銷軸承
(4) 汽門與汽門座
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
農用柴油引擎噴油霧化不良,其可能原因為
(1) 噴油壓力太高
(2) 噴油時間過早
(3) 噴油嘴磨損
(4) 噴射泵凸輪磨損
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
柴油引擎冒黑煙,其可能原因為
(1) 排氣管中滯留機油
(2) 引擎過熱
(3) 引擎超負荷
(4) 燃料系統阻塞
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
汽油引擎排出淡藍煙,其可能原因為
(1) 引擎過熱
(2) 點火過早
(3) 進入燃燒室之機油過量
(4) 空氣濾清器阻塞
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
未發動之汽油引擎化油器溢流管有汽油流出,其可能原因為
(1) 浮筒針閥密合不良
(2) 油門未關
(3) 主噴油嘴阻塞
(4) 阻風門關閉
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
使曲軸轉動之力為
(1) 重力
(2) 扭力
(3) 向心力
(4) 離心力
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