更多"Under normal conditions, the main s"的相关试题:
[单项选择]Under normal conditions a liferaft is released from itscradle by（）.
A. cutting the restraining strap
B. unscrewing the turnbuckle on the back of the cradle
C. lifting one end of the raft
D. pushing the plunger on the center of the hydrostatic release
[单项选择]Under normal conditions, the refrigerant enters the compressor in an operating refrigeration system as a （）.
A. liquid
B. dry saturated gas
C. wet saturated gas
D. superheated vapor
[单项选择]Under normal operating conditions, the highest temperature and pressure conditions existing in a flash-type evaporator will occur in the （）.
A. first stage
B. second stage
C. distillate cooler
D. salt water feed heater
[单项选择]Under normal weather and sea conditions when securing a stack of containers with non-locking fittings，lashings are required when the tier exceeds what height?（）.
A. Lashings are always required
B. One container
C. Two containers
D. Three containers
[单项选择]Under normal conditions, the quantity of air circulation becomes less and less.What is the reason?（）
A. dirty delivery ducts
B. too much refrigerant
C. the fouling filters
D. high temperature outside
[单项选择]When anchoring a vessel under normal conditions，which scope of chain is recommended? （）
A. Four times the depth of water
B. Two and one-half times the depth of water
C. Five to seven times the depth of water
D. Fifteen times the depth of water
[单项选择]Under normal operating conditions, the rudder is hydraulically locked unless （）.
A. the manual trick wheel is engaged for steering
B. the variable stroke pump is off stroke
C. a rudder order is given by the control system
D. an electric power system failure occurs at the steering gear
[单项选择]Under manoeuvring condition the main engine may run on （）.
A. gas oil
B. marine diesel oil
C. residue oil
D. crude oil
[单项选择]The main source of fuel injection system malfunctions is （）
A. improper adjustments
B. contaminated fuel
C. coated fuel lines
D. excessive vibration
[单项选择]Which of the following problems is the main source of fuel pump and injection system malfunctions?（）
A. Improper lubrication
B. Air in the fuel system
C. Coated fuel lines
D. Excessive vibration
[单项选择]The main purpose of changing main engine to electronic controlled is not to（）
A. control fuel injection time more precisely
B. control fuel injection rate more precisely
C. meet the environmental requirements
D. meet high engine speed requirements
[单项选择]The main purpose of warming the parts of the main engine is （）
A. to reduce heat stress
B. to reduce low temperature corrosion
C. to improve firing and starting performance
D. fuel saving
[单项选择]Under international rules（）.
A. all vessels must carry an after range light
B. vessels less than 50 meters in length need not carry an after range light
C. vessels stopped dead in the water should turn off their range lights
D. vessels over 20 meters in length must carry both range lights from sunset to sunrise
[单项选择]Under International Rules（）.
A. all vessels must carry an after range light
B. vessels less than 50 meters in length need not carry an after range light
C. vessels stopped dead in the water should turn off their range lights
D. vessels over 20 meters in length must carry both range lights from sunset to sunrise
[单项选择]Under the provisions of applicable international conventions, the officers to conduct port state control inspection must be duly authorized by （）.
A. the company
B. the Government of the country
C. the organization recognized by the Administration
D. the IMO
[单项选择]When under maneouvring conditions with the machinery being manually operated the control unit or console should be （）
A. automatically controlled
B. continuously manned
C. off power
D. none of the above is true
[单项选择]Which equipment is the primary source of generating a locating signal?（）
A. DSC only
B. DSC and EPIRB
C. SART and DSC
D. EPIRB and SART
