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【单选题】
关于翼点描述,错误的是A.
该处骨质薄弱
B.
蝶骨、顶骨、筛骨和上颌骨四骨的会合处
C.
构成“H”形的缝
D.
内侧有脑膜中动脉通过
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举一反三
【单选题】A decrease in the flash point of diesel engine lube oil indicates the lube oil has become _____.
A.
contaminated with sludge
B.
contaminated with carbon
C.
diluted with fuel oil
D.
diluted with water
【单选题】Demulsibility of a lube oil is defined as _____.
A.
the ability of oil to separate from water
B.
the temperature at which oil flows rapidly
C.
a measure of the water in a lube oil system
D.
an emulsion of different grades of oil
【简答题】支付手段 名词解释
【简答题】名词解释: 支付手段
【单选题】A dirty lube oil strainer can result in（）
A.
crankcase
B.
low lube oil temperature
C.
excessive oil consumption
D.
low bearing oil pressure
【单选题】Which of the following conditions indicates the dilution of diesel engine lube oil by fuel oil?
A.
Water discharging from the water outlet of the lube oil purifier
B.
Fuel oil discharging from the water outlet of the lube oil purifier
C.
Lube oil discharging from the water outlet of the lube oil purifier
D.
A change in the lube oil viscosity
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