名词解释题硬度(hardness of water)

名词解释题
硬度(hardness of water)

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在New Brushes(新画笔)对话框中可以设定画笔的()A. Diameter(直径)B. Hardness(硬度)C. Color(颜色)D. Spacing(间距)

4.— Did you have anyone ______the trees?—Yes,l had the trees ______.A. to water ;waterB. to water; wateredC. water ; to be wateredD. water; watered

The boiler water alkalinity in a coil-type auxiliary boiler should be maintained at the pH recommended by the boiler manufacturer to______.A.precipitate(使沉淀) silica (硅石)from solutionB.reduce corrosion in the heating coilC.prevent clogging and erosion in the coilD.maintain zero water hardness

The height of tide is the ______.A.depth of water at a specific time due to tidal effectB.difference between the depth of the water and the area's tidal datumC.difference between the depth of the water and the high water tidal levelD.difference between the depth of the water at high tide and the depth of the water at low tide

在Photoshop中,在NewBrushes新画笔对话框中可以设定画笔的()A、Diameter(直径)B、Hardness(硬度)C、Color(颜色)D、Spacing(间距)

水的硬度(hardness of water)

硬度(hardness of water)

硬度(hardness)

在NewBrushes(新画笔)对话框中可以设定画笔的()A、Diameter(直径)B、Hardness(硬度)C、Color(颜色)D、Spacing(间距)

在New Brushes(新画笔)对话框中可以设定画笔的:()A、 Diameter(直径)B、 Hardness(硬度)C、 Color(颜色)D、 Spacing(间距)

饮用水注入管()A、fresh water filling pipeB、bilge water filling pipeC、drinking water filling pipeD、sea water filling pipe

“hardness”是()A、材料抵抗表面形变的能力,抵抗外物压入B、与材料的抗张强度、抗压强度和弹性模量等性质无关

单选题Supposing there is a water container. The taller the container, ______ at the bottom.Agreater will the water pressure beBthe water pressure will be greaterCthe greater the water pressure will beDgreater the water pressure will be

单选题Measure () by means of lead wire.Athe clearance of the main bearingBthe diameter of main bearingCthe hardness of main bearingDthe tolerance of main bearing

单选题We use () to distill fresh water from sea water.AengineBsea water pumpCcylinder coolerDfresh water generator

单选题Why the cooling water of the diesel engine should be treated? Because the()ACooling water is alkalescenceBcooling water is acidityCcooling water has salinityDcooling water has impurity

单选题Shims of different thicknesses are inserted between the shells to enable adjustment of ().Athe bearing clearancesBthe bearing thicknessCthe bearing strengthDthe bridge hardness

单选题Which of the following may hardness of the boiler water cause?() (1) scale formation (2) tube failure (3) corrosionA(1)and(2)B(1)and(3)C(2)and(3)D(1),(2)and(3)

单选题The height of tide is the ().Adepth of water at a specific time due to tidal effectBdifference between the depth of the water and the area's tidal datumCdifference between the depth of the water and the high water tidal levelDdifference between the depth of the water at high tide and the depth of the water at low tide

单选题淡水注入管()Afresh water filling pipeBsea water filling pipeCballast water filling pipeDbilge water filling pipe

单选题Supposing there is a water container. The taller the container, _____at the bottom.Agreater will the water pressure beBthe water pressure will be greaterCthe greater will be the water pressureDgreater the water pressure will be

单选题When distilling salt water the cooling water discharging from the distiller is fed back to evaporator as feed water ().Ato cut down the amount of cooling water neededBto prevent an excess amount of cooling water from being discharged to the bilgesCto supply hot water to the evaporator for more economical operationDNone of the above is tree

单选题In a diesel engine jacket water cooler, with seawater cooling the fresh water, the()Asea water temperature must never be warmer than 40℃Bjacket water pressure should always be greater than the sea water pressureCjacket water temperature must always be less than 60℃Djacket water pressure must always be less than the sea water pressure

名词解释题硬度(hardness)

单选题The boiler water alkalinity in a coil-type auxiliary boiler should be maintained at the pH recommended by the boiler manufacturer to()Aprecipitate silica from solutionBreduce corrosion in the heating coilCprevent clogging and erosion in the coilDmaintain zero water hardness

名词解释题水的硬度(hardness of water)

单选题眼镜片膜层有 ①dye ②Antireflection film ③Water-proof film ④Hardness film ⑤Impact resistantfilm,膜层由表及里的顺序是()A②③④⑤B⑤②③①C⑤④②③D②④⑤①