更多"The center line condition of the tr"的相关试题:
[单项选择]When the current in a power transmission line is increased, the power loss （）
A. increases as the square of the current
B. decreases as the square root of the current
C. remains the same, as it is independent of current flow
D. increases in direct proportion as the current
[单项选择]（）The main center-line structural member, running fore and aft along the bottom of a ship, sometimes referred to as the backbone.
A. Frame
B. Deckbeam
C. Stringer
D. Keel
[单项选择]（）is the main center-line structural member，running fore and aft along the bottom of a ship，sometimes referred to as the backbone.
A. Frame
B. Deckbeam
C. Stringer
D. Keel
[单项选择]Misalignment of the drive shaft and propeller shaft flanges can be detected by using a dial indicator or （）.
A. inside micrometer
B. feeler gauge
C. adjustable trammel
D. sighting device
[单项选择]A disk with a horizontal line through its center, equivalent to the summer load line, is called the（）.
A. deadrise mark
B. maximum alloable draft mark
C. pilmsoll mark
D. tonnage mark
[单项选择]A disk with a horizontal line through its center，equivalent to the summer load line，is called the（）.
A. deadrise mark
B. maximum allowable draft mark
C. plimsoll mark
D. tonnage mark
[单项选择]Which condition suggests that your present position lies in the navigable semicircle of a tropical storm（）.
A. A backing wind
B. A veering wind
C. Sustained gale force winds
D. A strong wind that maintains a constant speed and direction
[单项选择]The officer responsible for the sanitary condition of the engineering department is the （）.
A. Master
B. Chief Mate
C. Chief Engineer
D. First Assistant
[单项选择]The transmission time duration of a single pulse of radio-frequency energy is a function of the（）.
A. persistence
B. pulse repetition rate
C. pulse length
D. resolution
[单项选择]Which characteristic or condition will have the greatest effect on increasing a hydraulic oils viscosity?（）
A. Pour point
B. Cloud point
C. Vacuum
D. Pressure
[单项选择]To ensure oil purifier working in normal condition,the interval between two sludge discharging should not exceed（） hours.
A. 2
B. 4
C. 5
D. 6
[单项选择]
A condition contributing to diesel engine piston rings sticking in the ring grooves, is insufficient ring clearance at the ring（）
Ⅰ.gap
Ⅱ.side
A. Ⅰonly
B. Ⅱ only
C. both Ⅰ and Ⅱ
D. neither Ⅰ nor Ⅱ
[单项选择]For the intermediate condition, thermostats must be correctly set （）.
A. by trial and error
B. by and large
C. automatically
D. very easily
[单项选择]Which condition indicates that your radar needs maintenance?（）
A. Serrated range rings
B. Indirect echoes
C. Multiple echoes
D. Blind sector
[单项选择]The transmission of messages respecting the dangers specified is free（）cost to the ships concerned.
A. of
B. on
C. at
D. in
[单项选择]An AC synchronous transmission type remote steering control system consists of a （）.
A. transmitter at the steering station and a receiver at the steering engine
B. reversible motor at the steering station geared to the steering pumps
C. small induction motor on the bridge which controls the redder through pulleys
D. variable displacement hydraulic pump driven by a reversible DC motor
