ironically

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• Many cast iron pistons are designed with heat dams, which serve to （）

  A . keep piston crown temperatures elevated for smoother combustion B . reduce the possibility of overheating the top compression ring C . help retain the heat of compression to prevent ignition delay D . help retain the heat of compression to prevent combustion knock

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• An aluminum piston has lower inertia and higher coefficient of （） compared to that of cast iron.

  A . viscosity B . twisting moments C . inertia D . thermal expansio

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• 在高尔夫术语中，“Iron”的意思是（）。

  A . 铁杆 B . 钢铁 C . 推杆 D . 木杆

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• A number of cylinder liners are enclosed in one cast iron casing to form a （）.

  A . cylinder cover B . cylinder block C . cylinder frame D . bed-plate

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• Cast iron pistons used in large propulsion diesel engines are constructed with （）

  A . not taper what so ever B . the skirt being tapered and smaller than the crown C . the skirt being tapered and larger than the crown D . the crown being tapered and smaller than the skirt

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• The smith soon（）three iron shoes for the horse.

  A . forged B . formed C . framed D . formatted

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• At the magnetic equator there is no induced magnetism in the vertical soft iron because（）.

  A . the lines of force cross the equator on a 0°-180°alignment B . the quadrantal error is 0° C . there is no vertical component of the Earth's magnetic field D . the intercardinal headings have less than 1&deg

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• An advantage of aluminum pistons, when compared to cast iron pistons is （）.

  A . greater high temperature strength B . better heat conductivity C . greater weight per cubic inch D . increased resistance to wear

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• "Cast iron has poor corrosion resistance to sea water, especially in the presence of bronzes" Implies（）.

  A . east iron is a cheap material B . cast iron can pollute sea water C . cast iron has mere corrosive than bronzes to sea water D . cast iron is more corrosive to sea water when it meets with bronze

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• A tug is “in irons” when held in a fixed position by（）

  A . the weight of its tow，its being anchored，or grounded B . the weight of its towing hawser on the bottom C . an adverse current D . lack of power or an engine breakdow

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• At the top of the A-frames there is a strong cast iron frame called （）.

  A . cylinder liner B . cylinder cover C . the gear box D . the scavenging box

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• The children went there to watch the iron tower ______ .

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• e. Vitamin C supplements may be combined with iron supplements to increase iron absorption.

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• which substance in body contains iron?

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• Iron is more useful ______ any other metal.

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• 105. Iron ore can't commonly be loaded with_____.

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• When carbon is added to iron in proper ________ the result is steel.

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• The author makes clear both the effects of iron deficiency on people’s health and the

  是 否

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• The ironical point is that Microsoft's improvement of security______.

  A．is getting along at a pace dissatisfying to regulators B．brings itself a total control over the operating system C．will lead to European Commission's stricter licence D．may be accused of abusing its dominance of the market

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• Ironically, those things that keep us from knowing another person too well （e.g., sec

  Ironically, those things that keep us from knowing another person too well(e.g., secrets and deceptions)may be just as important to the development of satisfying relationship as those things that enable us to obtain accurate knowledge about a person(e.g., disclosure and truthful statements).

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• （)The settlers introduced iron tools, muskets for hunting, domesticated animals, and

  A．A.True B．B.False C．C.Not Mentioned

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• Strike the iron while it is hot. _____________ （四字格)。

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• When carbon is added to iron in proper__, the result is steel（）

  A．rates B．thicknesses C．proportions D．densities

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• “铁影壁”是元代的文物。译：The Iron Screen is（)of the Yuan Dynasty.

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