Excessive piston ring wear in a diesel engine will cause（）
Water lubricated tailshaft bearings wear,（）
What type of stern tube bearing has the least friction（）.
What will NOT increase friction of a liquid flowing in a pipe and cause a loss of suction head?（）.
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
Friction, engine wear and oil consumption in a diesel engine are directly related to the （）.
In a diesel engine, excessive cylinder liner wear will cause （） (1) increased blow-by (2) wear between the piston ring and groove
Friction developing between the moving parts of a governor, governor linkage and control valve will cause the governor to （）.
The pipe friction and the resistance will （） as a result of an increase in the amount of fluid flowing through the system.
You should always wear（）when working on deck.
The mechanical efficiency of an engine （） because losses occur in the form of friction.
9. Dennis likes to wear _________.
Traditionally, Scotsmen don’t wear underwear with kilts?()
What do most Mongolians wear on formal occasions?
What kind of outfit do Elisa wear?
原文:Such materials are characterized by good insulation and high resistance to wear. 译文:这些材料的特点是:绝缘性好。
Wear jeans to an interview.
To operate a lathe, you should NOT wear ( ).
Even before modern notions of friction, it was known that greased surfaces move over one another more easily than dry ones.
Wear flat shoes
45 When did British gentlemen begin to wear ties regularly？
听力原文：Watches, which ore really small clocks, were first made during the sixteenth century. The earliest watches were made of heavy iron, and people wore them hanging from their belts. Little by little, watches were made smaller so that they could be carried more easily. The invention of the machinery for the mass production of these parts of clocks and watches was an important step in making clocks and watches available to the general public. In some watches, small pieces of precious stones, such as rubies or sapphires, are used at the points on which the wheels mm. Since these stones are very hard, they do not wear down very easily under the friction of the moving wheels. Thus a watch utilizing such stones will keep accurate time over a much longer period than other watches.
"wear the willow" could refer to a person who（）.
4、翻译句子，注意power的译法。 Friction causes a loss of power in the machine.
