The pitch ratio of a propeller is the mean pitch divided by （）.

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• The ratio of the height of a vessel’s rudder to its width is referred to as the（）.

  A . aspect ratio B . constriction ratio C . rudder ratio D . steering ratio

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• Which of the following reasons represents why the designed compression ratio of a gasoline engine is lower than that of a diesel engine?（）

  A . compression must be low for effective spark ignition B . compression must be low for required horsepower and torque generation C . compression must be low to prevent pre-ignition D . compression must be low to have effective pre-ignitio

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• Pitting in the area close to the pitch line and on the same end of each gear tooth of a reduction gear unit would be caused by （）

  A . corrosion on the gears B . excessive gear speed C . dirt in the oil D . misalignment of the gear

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• The pitch of a propeller is a measure of the（）.

  A . angle that the propeller makes with a free stream of water B . angle that the propeller makes with the surface of the water C . number of feet per revolution the propeller is designed to advance in still water without slip D . positive pressure resulting from the difference of the forces on both sides of the moving propeller in still water without sli

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• To safely anchor a vessel there must be sufficient scope in the anchor cable. Scope is the ratio of（）.

  A . weight of cable to weight of vessel B . weight of cable to weight of anchor C . length of anchor to depth of water D . length of cable to depth of water

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• Which of the following relationships should occur between the temperature developed in a combustion space, and the compression ratio of the engine?（）

  A . Higher compression ratios create higher temperature B . Higher temperatures create higher compression ratios C . low temperatures create higher compression ratios D . Higher compression ratios create low temperature

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• The ratio of output response to a specified change in the input is known as（）

  A . primary feedback B . deviation C . sensitivity D . dead band

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• The most powerful signal of stress is a change of pitch on the vowel.（）

  A . 正确 B . 错误

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• As a ship moves through the water，it drags with it a body of water called the wake. The ratio of the wake speed to the ship’s speed is called（）.

  A . propeller velocity B . speed of advance C . wake distribution D . wake fractio

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• Increasing the compression ratio of a diesel engine while maintaining the designed rate of fuel flow will result in （）

  A . increased horsepower B . reduced efficiency C . increased heat loss D . lower cylinder pressure

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• What is the ratio of physical partitions to logical partitions in rootvg in a non-mirrored environment（）

  A . 0 B . 1 C . 2 D . 3

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• Specific gravity is a number representing the ratio of a mineral’s weight to the weight of an equal volume of ( ).

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• 7 When does the referee give the other team a free kick?A When a player commits a foul.B When the ball goes out of the sides of the pitch.C When the ball leaves the ends of the pitch.

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• A decrease in the percentage of net income paid out as dividends will ________ the retention ratio.

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• 6 When is a corner given according to the football rule? A If the ball goes out of the sides of the pitch. B If the ball leaves the ends of the pitch. C When a player commits a foul.

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• The monetary authority of The Stoddard Islands will exchange its currency for U.S. dollars at a one-for-one ratio. As a result, the exchange rate of the Stoddard Islands currency with the U.S. dollar

  A．A fixed peg. B．dollarization. C．A currency board.

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• We can easily see from the definition of k _______ the ratio of a force _______ a length that the unit of elastic potential energy （）

  A．by……with B．by……to C．as……with D．as……to

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• If a company's current ratio declined in a year during which its quick ratio improved, which of the following is the: most likely explanation？______.

  A．Inventory is declining B．Inventory is increasing C．Receivables are: being collected more rapidly than in the past D．Receivables are being collected more slowly than in the past

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• If someone talks about the pitch of a voice, he is referring to its（)

  A.loudness or softness B.highness or lowness C.clarity or vagueness

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• The major component of the "pitch-black dust"（Line 5, Paragraph 3) should be ______A．iron.

  The major component of the "pitch-black dust"(Line 5, Paragraph 3) should be ______ A．iron. B．magnesium. C．silicate. D．carbon.

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• During a period of rising inventory costs, a company decides to change its inventory method from FIFO to the weighted average cost method. Which of the following financial ratios will most likely incr

  A、Current B、Debt-to-equity C、Number of days in inventory

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• The exact shape of a polar plot depends on the value of the damping ratio z, but the general shape of the plot is the same for both the underdamped case and overdamped case（）

  是 否

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• For an asset with a price of 1000, which of the following price targets is least likely based on Fibonacci ratio？

  A．618. B．1294. C．1618.

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• Price-to-book value ratios are most appropriate for measuring the relative value of a:

  A、bank. B、Manufacturing company. C、Mature technology company.

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