更多"[单选题]Vents are led from the engine "的相关试题:
[单选题] 5G网络的频段分为FR1和FR2,其中在FR2频带中,可以配置的最大信道带宽为?()
A.400M
B.200M
C.100M
D.300M
[单选题] While underway and towing an unmanned tank barge you are required to ______．
A.Maintain a strict watch on the barge from the towing vessel
B.Fly a red flag from the towing vessel
C.Open the tops of all empty tanks on the barge
D.Take hourly soundings of any loaded tanks on the barge
[单选题] The most frequent cause of fires aboard tankers is due to ______．
A.Improper gas freeing
B.Leaking of cargo pump glands
C.Tobacco smoking
D.Spontaneous combustion
[单选题] When cleaning a tank by the Butterworth process，you should begin to pump out the slops ______．
A.At the end of the drop schedule
B.When the process is started
C.When the process is finished
D.When the tank is clean
[单选题] Cargo transfer operations on a tank vessel need NOT be stopped when ______．
A.a tug comes alongside while the tanker is loading grade D and E cargoes
B.a large，fresh oil spill is discovered immediately adjacent to the side of the tanker
C.there is an electrical storm in the vicinity
D.there is a fire on the dock or on a nearby vessel
[判断题]标签中表示网页中文档头的是（ ）
A.正确
B.错误
[单选题] JT-C系列机车信号车载设备显示器可采用点阵式LED或LED8显示机车信号机；LED8显示机车信号机工作电压48V±4.8V ，工作电流小于( )。
A.100 mA
B. 50V±10V
C. 55mA
D. 60mA
[单选题] 5G FR2频段支持多种带宽配置,以下哪个不是FR2频段支持的带宽的是?()
A.50MHz
B.100MHz
C.150MHz
D.200MHz
E.400MHz
[单选题] NR FR1、FR2的单载波最大带宽分别是多少,载波最大带宽和子载波间隔是否有关
A.50MHz、200MHz、无关
B.100MHz、400MHz、无关
C.50MHz、200MHz、有关
D.100MHz、400MHz、有关
[单选题] While testing a cargo tank，your oxygen indicator reads 25% oxygen in the tank．You would then ______．
A.Enter the tank safely
B.Suspect the accuracy of the reading
C.Ventilate the tank
D.Test for nitrogen
[单选题] Frames to which the tank top and bottom shell are fastened are called ______．
A.floors
B.intercostals
C.stringers
D.tank top supports
[单选题] Access to a cargo pumproom on a tank vessel carrying grades
A，B，C or D liquid cargoes shall be ______．
A.At least 13.1 feet away from the galleys，living quarters or navigation spaces
B.From the open deck
C.Only from areas equipped with power ventilation systems
D.Isolated from any part of the vessel which normally contains sources of vapor ignition
[单选题] Where in the tank shall the oxygen level be determined before crude oil washing?
A. 1 meter from the deck and in the bottom of the tank
B. In the middle of the tank
C. 1 meter from the deck and in the middle region of the ullage space
D. 2 meter from the deck and in the middle region of the ullage space
[单选题] ACCIDENTAL ESCAPE OF OIL OUT OF A TANK WHEN IT GETS TOO FULL BECAUSE PUMPING WAS NOT STOPPED IN TIME defines ______．
A.Overloading
B.Over discharging
C.Overflow
D.Overtaking
[单选题]JT-C系列机车信号车载设备显示器可采用点阵式LED或LED8显示机车信号机；LED8显示机车信号机工作电压48V±4.8V ，工作电流小于( )。
A.100 Ma
B.50V±10V
C.55mA
D.60mA
[判断题]标签中表示网页中文档头的是( )
A.正确
B.错误
[单选题]The amount of lube oil in the drain tank should be checked by
A.measuring
B.sounding
C.taking measurement
D.taking readings
