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金属物品用英语表示为（）
- A、metal object
- B、metal thing
- C、metal goods
- D、metal item
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更多 “金属物品用英语表示为（）A、metal objectB、metal thingC、metal goodsD、metal item” 相关考题
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We drop a piece of metal into a jar full of water, the metal will float if it weighs less than______.A. an equal amount of silverB. an equal amount of goldC. all the water in the jar nowD. the water that leaves the jar
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In the 9th century during the Song Dynasty, people used ______to substitute metal coins for the convenience of their credited consumers.
A、the paper currencyB、shellsC、bartered goodsD、weapons
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What’s corrosion？ It’s a chemical______in which metal is transformed into salt and oxides.A.react
B.action
C.reaction
D.response
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（）are the three different coatings which can protect metal from corrosion.A、Cement wash, bitumen and paintB、Metal primers, undercoats and topcoatsC、Varnishes, heat-resistant paints and anti-fouling paintsD、Cement wash, primer and undercoat
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Primer coats are applied to a bare metal surface to （）protection against rust.A、letB、giveC、preventD、take
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A bare metal backup requires which of the following backup method ologies？（）A、 FullB、 DifferentialC、 IncrementalD、 Database
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A bare metal backup requires which of the following backup methodologies?（）A、FullB、DifferentialC、IncrementalD、Database
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It is prohibited to carry any（）on the planeA、contrabandB、forbidden articleC、dangerous articleD、metal items
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单选题The purpose of the ashing step in graphite-furnace atomic-absorption spec-troscopy is to（）A
Vaporize metal atoms to be analyzedB
Cause the metal species to form carbides which are more volatileC
Convert the graphite furnace to ash to avoid carbide formationD
Burn off organic species that would interfere with the elemental analysis
考题
单选题In a large, low-speed diesel engine the clearance between the piston crown and cylinder head is found to be excessiveIn order to correct for this, you should（）A
build up the piston crown by metal sprayingB
build up the cylinder head by metal sprayingC
insert shims between the crankpin bearing box and the connecting rod footD
install a thinner head gasket
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单选题What is a step in attaching a poured metal socket to a wire rope?（）A
Etch the wire with acidB
Install a wire seizing on the wire that will be inside the socketC
Ensure the fiber core is well lubricatedD
Pour molten babbitt metal into the socket
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单选题In many installations basket strainers consist of a cylindrical container in which a perforated metal or wire basket is suspendedThe bold and italic word “which” means （）.A
installationsB
basket strainersC
a cylindrical containerD
a metal or wire basket
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单选题The main bearing shells are made of steel with a lining of bearing metal which may be white metal, copper-lead or aluminum-tin alloy What is the meaning of “which” in the sentence above?（）A
main bearing shellsB
main bearingC
steelD
bearing metal
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单选题For a propeller direct driven by the engine,（）.A
the thrust pads are while metal faced on both sidesB
the thrust pads are while metal faced only on the forward sideC
the thrust pads are while metal faced only on the after sideD
intermediate shaft usually supported by a plummer block
考题
单选题The cross-head shoes are white metal lined, grooves being cut horizontally on the face of the white metal to ensure （）.A
an adequate supply of lube oilB
an adequate supply of fuel oilC
an adequate supply of turbine oilD
an adequate supply of cylinder oil
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