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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
問題詳情
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
參考答案
上一篇 :
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
下一篇 :
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
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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(
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