题目详情
当前位置:首页 > 职业技能鉴定考试 > 轮机英语
题目详情:
发布时间:2023-10-14 00:04:48

[单项选择]When subjected to high heat from a open flame, or an electric heating element, which of the listed refrigerants will break down and produce phosgene gas?()
A. CO2
B. Methyl chloride
C. R-22
D. Sulphur dioxide

更多"When subjected to high heat from a "的相关试题:

[单项选择]When the heat load begins to increase, the needle valve of an expansion valve will()
A. move in an opening direction
B. move in a closing direction
C. either open or close
D. not move at all
[单项选择]When towing in an open seaway,it is important to use a towing line().
A. made only of wire rope,due to possible weather conditions
B. that will have the tow on a crest while your vessel is in a trough
C. that will have the tow on a crest while your vessel is on a crest
D. with little dip to gain maximum control of the tow
[单项选择]The process that occurs when heat is generated by a chemical reaction within a substance and continues to a point of ignition is known as ().
A. chemical ignition
B. spontaneous combustion
C. chemical combustion
D. radiation ignition
[单项选择]When transferring survivors from an enclosed lifeboat to a rescue vessel,personnel on board the boat should().
A. remove their life preservers to make it easier to climb on board the rescue vessel
B. climb on top of the boat while waiting for their turn to transfer to the rescue vessel
C. remain seated inside and make the transfer one person at a time
D. enter the water and swim over to the rescue vessel
[单项选择]When discharging oil from an oil tanker the instantaneous rate()60 liters per nautical mile.
A. Should not exceed
B. Must be up to
C. Should exceed
D. Should be about
[单项选择]Additional heat extraction from the exhaust gases can be effected by adding an () section to the unit in plants.
A. air cooler
B. economizer
C. injector
D. air blower
[单项选择]When anchoring in open anchorage, chief engineer should consult with captain ()
A. if the ship must be stand by
B. if M-E should be stopped
C. if keep-watching as in voyage
D. if the ship must anchor two anchors
[单项选择]When it is necessary to open a refrigeration system for repairs and the system will be open for more than a few minutes, the open ends of the system should be ().
A. dehydrated
B. purged
C. plugged
D. evacuated
[单项选择]The heat removed from the refrigerant in the condenser of a refrigeration plant is the ()
A. latent heat of expansion
B. sensible heat of condensation
C. heat of compression
D. all of the above
[单项选择]When launching an open lifeboat by falls,the boathooks should be().
A. secured forward and aft where readily available
B. secured amidships where they will not hinder the personnel
C. used for fending off
D. used for picking up survivors in the water
[单项选择]When a high pressure system is centered north of your vessel in the Northern Hemisphere().
A. You should experience hot,moist,clear weather
B. The wind direction is generally easterly
C. The winds should be from the southwest at your location
D. The winds should be brisk
[单项选择]The rate of heat transfer from a hot region to a cold region is affected most by the ().
A. size of the heat sink
B. temperature difference between the regions
C. size of the heat source
D. total heat of the system
[单项选择]A refrigerant gives up heat when it goes through ().
A. condenser
B. regurgitate
C. evaporator
D. boil coil
[单项选择]The amount of heat released by steam when it changes to water at the same temperature is called().
A. latent heat of condensation
B. latent heat of vaporization
C. latent heat of saturation
D. sensible heat of condensation
[单项选择]A patient suffering from heat exhaustion should be().
A. moved to a cool room and told to lie down
B. kept standing and encouraged to walk slowly and continuously
C. given a glass of water and told to return to work after 15 minutes of rest
D. None of the above are correct
[单项选择]A fluid coil will ()large quantities of heat when it changes state from a liquid to a vapor.
A. release
B. absorb
C. develop
D. regenerate
[单项选择]A fluid coil will () large quantifies of heat when it changes state from a liquid to a vapor.
A. release
B. absorb
C. develop
D. regenerate
[单项选择]When navigating in high latitudes and using a chart based on a Lambert conformal projection,().
A. a straight line drawn on the chart approximates a great circle
B. the chart should not be used outside of the standard parallels
C. the course angle is measured at the mid-longitude of the track line
D. distance cannot be measured directly from the chart

我来回答:

购买搜题卡查看答案
[会员特权] 开通VIP, 查看 全部题目答案
[会员特权] 享免全部广告特权
推荐91天
¥36.8
¥80元
31天
¥20.8
¥40元
365天
¥88.8
¥188元
请选择支付方式
  • 微信支付
  • 支付宝支付
点击支付即表示同意并接受了《购买须知》
立即支付 系统将自动为您注册账号
请使用微信扫码支付

订单号:

请不要关闭本页面,支付完成后请点击【支付完成】按钮
恭喜您,购买搜题卡成功
重要提示:请拍照或截图保存账号密码!
我要搜题网官网:https://www.woyaosouti.com
我已记住账号密码