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【单选题】

All units of measurement are（）, because space, time, weight, and other dimensions are not naturally divided into units.

A、objective

B、traditional

C、artificial

D、controversial

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更多“All units of measurement are（）, because space, time, weight, and other dimensions are not naturally divided into units.”相关的问题
第1题
[单选题] In general, the oil mist defectors include a base plate with air blast pumpThe function of air blast pump is to （）crankcase.

A、supply clean air to the measuring compartment of the units for more accuracy  B、generaate the pressure required for the extraction of the oil mist from the  C、generate the pressure required for the extraction of the oil mist from the crankcase  D、supply clean air to the measuring track of the units for more accuracy  

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第2题
[单选题] （） of an engine crankshaft can be detected by measuring deflections of crank webs for each unit of the engine.

A、Misalignment  B、Length  C、Strength  D、Stresses  

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第3题
[] In a pneumatic automation system, a unit producing a signal to govern the position of the controller of the measured variable, relative to the value of the measured variable, is said to have（）.

A、A.reset action  B、B.proportional action  C、C.two position action  D、D.rate action  

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第4题
[单选题] Most pedestal crane power is provided by（）.

A、Electro-hydraulic units  B、Steam units  C、Independent internal combustion power units  D、All of the above  

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第5题
[单选题] Which of the following element(s) should be taken into account in the preparation of the “Cargo Securing Manual”? （）

A、Duration of the voyage  B、Types of cargo units and vehicles to be carried  C、Weight of cargo units and vehicles  D、All of the above  

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第6题
[单选题] Combustible gas indicators measure the presence of combustible gas a percentage of the（）.

A、flash point  B、upper explosive limit  C、lower expiosive limit  D、All of the above  

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第7题
[单选题] At all angles of inclination，the true measure of a vessel’s stability is the（）.

A、metacentric height  B、displacement  C、righting moment  D、inclining moment  

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第8题
[单选题] The equator is（）.

A、the primary great circle of the Earth perpendicular to the axis  B、the line to which all celestial observations are reduced  C、the line from which a celestial body's altitude is measured  D、All of the above  

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第9题
[] Differential pressures can be measured with the use of a （）.

A、A.diaphragm type gage  B、B.pressure transducer  C、C.manometer  D、D.All of the above  

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