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• 44.引起柴油機爆震之因素中，下列何者為非？(A)燃油加熱溫度過低(B)噴油泵出口壓力過低，霧化不良(C)噴油閥開始噴出壓力過高(D)噴油量過多或噴油條件不佳
• 45.燃油噴射系統中，關於油量的控制部分，下列何者有誤？(A)理論上由高壓油泵的柱塞直徑和驅動凸輪的外徑來決定(B)從熱效率的觀點來看，燃油愈早切斷，效率愈高(C)柱塞的直徑大，效率就可提高(D)實際
• 46.下列何者描述有誤？(A)腐蝕性極強之亞硫酸與硫酸，造成金屬之嚴重腐蝕稱之為低溫腐蝕(B)五氧化二釩的腐蝕為高溫腐蝕(C)亞硫酸與硫酸的來源主要來自於燃油中的硫分(D)五氧化二釩的熔點為860℃超
• 47.關於重油添加劑之種類中燃燒促進劑部分，下列何者描述有誤？(A)燃燒觸媒的成分是鈷、錳、鋅等之金屬鹽(B)防止黑煙的成分是鋇之有機金屬鹽(C)剝離碳渣的成分是燐系化合物(D)銅、鐵的金屬鹽亦可為燃
• 48.下列何者為重油添加劑中防止高溫腐蝕的成分？(A)氫氧化鎂(B)氧化鎂(C)燐系化合物(D)鋇的有機金屬鹽
• 49.關於潤滑油中殘留碳分的描述，下列何者有誤？(A)殘留碳分較多時，潤滑油不易生成油膜，促使磨耗(B)殘留碳附著物會促使機械各部分低溫腐蝕(C)潤滑油含殘留碳分新油約0.2%，劣化油約15%(D)一
• 50.為防止潤滑油之劣化，延長使用時間，宜注意之事項中，下列何者有誤？(A)引擎出口的滑油溫度保持在80℃以下，並須提高油壓，增加給油量以增進冷卻效果(B)除去混入之金屬磨耗顆粒、銹類、防止觸媒作用(
• 1利用動態評量之評量策略,最能夠評量出特殊教育學生在自然情境中的自發性行為(A)O(B)X
• 2.同步電動機之速率是由什麼決定的(A)頻率與極數(B)負載(C)電源電壓(D)直流激磁
• 11.若f(x)=−9x2+24x−16，則下列何者正確？(A)f(x)≥0的解為x= (B)f(x)≤0的解為x≠ 之任意實數(C)f(x)＞0的解為任意實數(D)f(x)＜0無解
• 3.試求圖 2 之總電流 I 。 (A)I=4A(B)I=5A(C)I=6A(D)I=7A
• 17.Kevin practices cooking hard to become a cook. Hisdream will __________someday.(A) work out (B) r
• 18. Many people like to read Mark Twain's stories. He is a__________writer.(A) dull (B)boring(C
• 19. A: When did Allen __________baseball? B: I remember hedidn't play it before.(A)set up (B)ch
• 20. Jean: Thanks for driving me to the station. You didn'thave to.Sam: But I wanted to. It'
• 21. Buying new clothes for her cost him a lot, and__________.(A) taking her out for dinner does, too
• 22. lan's never been to Pingxi, and__________his sister.(A) so is (B) neither is(C)so has (D) n
• 23. Jill : Do you know the guy __________a book__________animals?Nora : Oh, that's Amy's f
• 24. The boxes__________ are on the floor__________mine.(A) which； is (B) who； are(C) that； are (D) t
• 25. The flowers __________put in the vase__________picked by my grandma this morning.his sister.mine
• 26. Brad and Jennifer have looked at many different apartmentsin the city. In the end, they decided
• 27. Mary: Guess what? Candy is going on a date with Ted.Andy:__________ She doesn't like him.(A
• 28. Judy: Did you enjoy the party?Jeremy: Yes. Thanks for inviting me.__________(A) A piece of cake.
• 29. Dick: Is it easy to find those people__________for years? Mia: No really!(A) I'll bring bac
• 30. The player__________ they were talking about won first prizelast month.(A)X (B) which(C) whose (