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【多选题】
Which are the best three Running script works in the world?A.
Preface to the Poems Composed at the Orchid Pavillion
B.
Draft of a Requiem to My Nephew
C.
The Cold Food Observance
D.
The Stele in the Jiucheng Palace
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【单选题】In the sentence “In some designs the cylinder oil is timed so that the oil injects only on the piston ring belt.”, the 'piston ring belt' means _____.
A.
piston crown
B.
piston ring groove
C.
piston skirt
D.
piston ring area
【简答题】The oil pan is usually formed of pressed steel. It usually holds 5 to 10 liters of oil, depending on the engine design .The oil pan and the lower part of the cylinder block together are called the cra...
【单选题】In a typical fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to _____ and heated.
A.
a service tank
B.
a collecting tank
C.
a sump
D.
a settling tank
【单选题】In a commonly used fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to _____ and heated.
A.
a service tank
B.
a settling tank
C.
an expansion tank
D.
a double bottom tank
【单选题】Which of the following is NOT the author's purpose of mentioning the oil crises in the 1970's?
A.
To prove that water is as expensive as oil.
B.
To warn the world of a possible water supply crisis.
C.
To call people's attention to the importance of energy conservation.
D.
To shock the people of the world into saving water.
【简答题】The oil pan is usually formed of pressed steel. It usually holds 5 to 10 liters of oil, depending on the engine design .The oil pan and the lower part of the cylinder block together are called the cra...
【简答题】The oil pan is usually formed of pressed steel. It usually holds 5 to 10 liters of oil, depending on the engine design .The oil pan and the lower part of the cylinder block together are called the cra...
【简答题】写出干氧氧化和水汽氧化的化学反应式。
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