問題詳情
39.柴油機排氣冒黑煙的原因是：
(A) 冷卻水漏入汽缸內
(B) 燃油的十六烷值太高
(C) 掃氣壓力太低
(D) 潤滑油進入汽缸內
(E) 噴油定時太遲
(A) 冷卻水漏入汽缸內
(B) 燃油的十六烷值太高
(C) 掃氣壓力太低
(D) 潤滑油進入汽缸內
(E) 噴油定時太遲
參考答案
無參考答案
內容推薦
- 船用液壓裝置選擇液壓油時，所需的黏度如何決定？(A) 液壓泵的種類(B) 工作壓力(C) 工作溫度(D) 防銹(E) 抗氧化
- 機艙裡常見的泵種類有那些？(A) 真空泵(B) 離心泵(C) 往復泵(D) 齒輪泵(E) 渦卷泵
- 船舶油漆塗裝的主要功用，下列何者正確？(A) 防汙(B) 除鼠(C) 美觀(D) 保護(E) 冷卻
- 有關對離心式泵之敘述，下列何者正確？(A) 起動時需加引水(B) 吸引力小(C) 出口被堵不會造成危險(D) 水頭高(E) 無自吸能力
- 下列何者為柴油機潤滑系統中潤滑油之功用？(A) 密封作用(B) 緩衝作用(C) 增溫作用(D) 清潔作用(E) 絕緣作用
- 柴油機與汽油機同屬於內燃機，二者主要不同之處為何？(A) 動力循環不同(B) 供油系統不同(C) 發火方式不同(D) 燃油與空氣混合方式不同(E) 汽缸體使用材料不同
- 下列何者為增大柴油機功率的途徑？(A) 增大汽缸直徑(B) 增加主機進氣壓力(C) 增加燃燒效率(D) 提高汽缸溫度(E) 增大主發電機輸出
- 機械損失功率是指在傳遞過程中功率的損失，其中包括：(A) 熱能損失(B) 摩擦損失(C) 泵氣損失(D) 化學損失(E) 帶動輔助機械損失
- 有關管路的顏色，下列何者正確？(A) 消防水管是紅色(B) 燃油管是紅色(C) 海水管是白色(D) 淡水管是綠色(E) 滑油管是黃色
- 現今船上用「整合航行系統」包括那些功能項目？(A) 機艙自動控制(B) 船體結構強度計測(C) 氣象導航(D) 衛星定位(E) 電子航儀及避碰雷達
內容推薦
- 下列各選項「」之國字字形，何者皆相同?(A)「ㄊㄢˊ」香裊裊／劇「ㄊㄢˊ」泰斗(B)室如懸「ㄑ一ㄥˋ」／「ㄑ一ㄥˋ」竹難書(C)「ㄧˋ」入天聽／患眼「ㄧˋ」病(D)買「ㄉㄨˊ」還珠／官員「ㄉㄨˊ」
- Mrs. Brown cooked a_______ but delicious dinner for her family.(A) big (B) simple (C) hard (D) y
- It’s cold now, and remember to put a_______ on grandma’s legs.(A)umbrella (B) couch (C) blanket
- The ice cream at the shop is famous, so there is always a long_______ of people in front of the
- The baseball team_______great joy when they won first prize in the important game.(A) began (B)
- Students in Taiwan enter senior high school ____ the age of fifteen.(A) in (B) for (C) on (D) at
- The apple tree grows_______ than the orange tree on my father’s farm.(A) good (B) better (C) bes
- My neighbor, Hebe, is a kind lady. She always treats me ________.(A) nice (B) friendly(C) well
- Hank: ________ did it take Tommy to finish the report? Fiona: Seven hours.(A) What time (B) Whic
- Their moms may be_______, but their love for their mothers never _______.(A) dead； dies (B) dead
- Sorry, I forgot to bring my chopsticks with me. Could you please give me a pair of clean _______
- Mr. and Mrs. Chen have five daughters, and Lucy is _______ of all. Some men passed their door ju
- I don’t think Katie will read any one of the books you picked out(選出) for her: _______ look(s) v
- Can you hold my bag for a second? ________ of my hands are dirty. I need to go to the bathroom n
- Andrew is my best friend in the class, and he always gets good grades in every subject. He share
- Guys, this is our market report of this year, our ________ time is weekend afternoons. About hal
- Son: Mom, I just finished ________ of my homework. Can I watch the football game now? Mom: No, y
- A: Thanks for your help. B: ________.(A) I’m all right (B) Not at all (C) It doesn’t matter (D)
- Tony：Did you buy the book from Tom yesterday? Amanda：Yes. I ________.(A) paid one hundred dollar
- 【題組】(A) doesn’t spend a long time (B) doesn’t take a long time (C) doesn’t cost a long time (D)
- 【題組】(A) to buy the tickets (B) to live in a nice hotel (C) taking the trip (D) staying in a good
- 【題組】(A) is filled with (B) is proud of (C) are full of (D) are good at
- 【題組】(A) in (B) on (C) by (D) at
- 【題組】(A) long (B) longer (C) short (D) shorter
- 【題組】(A) Besides (B) At least (C) In that case (D) From now on