网友您好, 请在下方输入框内输入要搜索的题目:

题目内容 (请给出正确答案)
单选题
The ratio of the weight of moisture contained in a given volume of air, to the weight of moisture that the same sample would hold if saturated, is called the().
A

absolute humidity

B

relative humidity

C

specific humidity

D

total humidity


参考答案

参考解析
解析: 暂无解析
更多 “单选题The ratio of the weight of moisture contained in a given volume of air, to the weight of moisture that the same sample would hold if saturated, is called the().A absolute humidityB relative humidityC specific humidityD total humidity” 相关考题
考题 心导管检查右心房平均血氧含量高出上腔静脉平均血氧含量()提示房间隔缺损。 A、1vol%B、2vol%C、3vol%D、4vol%E、5vol%

考题 如果氯内含氢量超过()时,就有爆炸的危险。 A、0.4~0.5%(vol)B、4%(vol)C、1%(vol)D、0.1%(vol)

考题 (c) Using the information contained in Appendix 1.2, compare the performance of HLP and MAS incorporatingrelevant percentage and ratio statistics under the following headings:(i) Competitiveness; (5 marks)

考题 The moisture equilibrium chart can be used to determine the ______.A.Absolute moisture content of the air surrounding a hygroscopic cargo when moisture equilibrium existsB.Dew point temperature that the air surrounding a hygroscopic commodity will have when in moisture equilibrium with that commodityC.Enthalpy of the air surrounding a hydroscopic cargo which is in moisture equilibrium with the cargoD.Temperature at which moisture equilibrium will occur in a cargo hold containing a hygroscopic cargo

考题 A VLCC(100,000 DWT+)with a 30,000 Shaft Horsepower Steam Turbine is slow to respond to engine movements and has less stopping power than normal ships because it has a ______.A.Bigger propellerB.Smaller power weight ratioC.Smaller propellerD.Larger power weight ratio

考题 环氧乙烷在空气中的爆炸极限是()。A、3~100%(vol)B、3.1~32%(vol)C、3.2~80%(vol)D、3.3~100%(vol)

考题 氢气处理工序开车时系统含氧量应控制在()A、<0.5%(vol)B、<1.0%(vol)C、1.5%(vol)D、2.0%(vol)

考题 关GMDSS的资料刊登在无线电信号书()A、VOL3B、VOL4C、VOL5D、VOL6

考题 氧气引入前氧气管线必须用氮气置换至氧浓度()voL%为合格。A、≤0.1voL%B、≤0.2voL%C、≤0.5voL%D、≤1.0voL%

考题 乙烯引入前乙烯管线必须用氮气置换至氧浓度()voL%为合格。A、≤0.1voL%B、≤0.2voL%C、≤0.5voL%D、≤1.0voL%

考题 MTBE在空气中的爆炸极限范围为()。A、1.3~10vol%B、1~7.9vol%C、1.6~15.1vol%D、1~6.5vol%

考题 根据GB./T20824—2007芝麻香型白酒标准规定,按产品的酒精度分为()。A、41%voL—68%voLB、40%voL—60%voLC、18%voL—40%voLD、35%voL—54%voL

考题 Which of the following is backed up with the mksysb command when a system consists of the volume groups rootvg, vol1, and vol2?()A、All filesystems in rootvg, vol1, vol2B、All locally mounted filesystems in the rootvgC、All files in the rootvg and system files in vol1 and vol2D、All local and remotely mounted filesystems

考题 What view would you use to determine if a given tablespace is fully self-contained for the execution of a tablespace point-in-time recovery?()  A、 TS_CHECKB、 TPITR_CHECKC、 TS_PITR_CHECKD、 CHECK_TSPITRE、 PITR_TS_CHECK

考题 单选题If the moisture content of the cargo sample is()the Transportable Moisture Limit,then the cargo should be safe to load.A aboveB belowC equal toD uncertain

考题 单选题()are increasingly used as main engine on merchant vessels, because they have a high Hp/Weight ratio.A Slow speed diesel enginesB Medium-speed diesel enginesC Steam enginesD Gasoline engines

考题 单选题What view would you use to determine if a given tablespace is fully self-contained for the execution of a tablespace point-in-time recovery?()A  TS_CHECKB  TPITR_CHECKC  TS_PITR_CHECKD  CHECK_TSPITRE  PITR_TS_CHECK

考题 单选题Medium speed engines have a () power to weight ratio than the slow speed two strokes, but due to the higher speeds tend to have () maintenance intervals.A higher;reducedB higher;increasedC lower;reducedD lower;increased

考题 单选题For a given weight of cargo,the stress on the heel block of a cargo boom().A increases as the cargo closes the head while hoistingB increases if the cargo runner is doubled upC decreases as the boom is topped to a greater angleD is determined by the thrust stresses on the boom

考题 单选题The moisture equilibrium chart can be used to determine the().A Absolute moisture content of the air surrounding a hygroscopic cargo when moisture equilibrium existsB Dew point temperature that the air surrounding a hygroscopic commodity will have when in moisture equilibrium with that commodityC Enthalpy of the air surrounding a hydroscopic cargo which is in moisture equilibrium with the cargoD Temperature at which moisture equilibrium will occur in a cargo hold containing a hygroscopic cargo

考题 单选题A VLCC (100,000 DWT+) with a 30,000 Shaft Horsepower Steam Turbine is slow to respond to engine movements and has less stopping power than normal ships because it has a().A bigger propellerB smaller power to weight ratioC smaller propellerD larger power to weight ratio

考题 单选题For a given fuel, a change in the compression ratio will affect the ignition lag by which of the listed means?()A An increase in compression ratio will increase the ignition lagB An increase in compression ratio will decrease the ignition lagC A decrease in compression ratio will decrease the ignition lagD A decrease in ignition lag will increase the compression ratio

考题 单选题What is the holding power ratio of an anchor? ()A Maximum mooring line tension divided by the anchor's weight in airB Anchor's weight in air divided by the maximum mooring line tensionC Preloading tension divided by the anchor's weight in airD Operating tension divided by the anchor's weight in air

考题 单选题The amount of moisture in a given sample of air, when compared with the amount of moisture the air could hold if totally saturated at the existing temperature of the sample, is called ().A absolute humidityB specific humidityC effective humidityD relative humidity

考题 单选题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 vesselB weight of cable to weight of anchorC length of anchor to depth of waterD length of cable to depth of water

考题 多选题Which two statements accurately describe a role?()AA role can be given to a maximum of 1000 users.BA user can have access to a maximum of 10 roles.CA role can have a maximum of 100 privileges contained in it.DPrivileges are given to a role by using the CREATE ROLE statement.EA role is a named group of related privileges that can be granted to the user.FA user can have access to several roles, and several users can be assigned the same role.

考题 单选题Hot air can hold().A less moisture than cold airB more moisture than cold airC the same amount of moisture as cold airD moisture independent of air temperature