更多"A tank which has been sealed for a "的相关试题:
[单项选择]A tank has been sealed and unventilated for a long period of timeWhich of the following conditions does this indicate?（）
A. The tank is safe to enter
B. The tank is especially dangerous to enter
C. Carbon monoxide is present
D. Water vapor present when the tank was sealed has oxidized
[单项选择]Before entering a fuel tank that has been cleaned, it should be checked with an oxygen indicator and a/an（）.
A. Orsat apparatus
B. flame safety lamp
C. Halide torch
D. combustible gas indicator
[单项选择]Let H （） the quantity of heat which has been converted into mechanical work.
A. represent
B. represents
C. representing
D. being represented
[单项选择]A ship crane which has been idle for a period of over six months shall be inspected to the same standards as a（）.
A. yearly inspection
B. quarterly inspection
C. monthly inspection
D. weekly inspection
[单项选择]If a container which has not been filled，packed，stuffed or loaded by the Carrier is delivered by the Carrier with the seal（），such delivery shall be deemed as full and complete performance of the Carrier’s obligation.
A. intact
B. properly used
C. perfect
D. fully sized
[单项选择]Our ship has not been to shipyard for a long time, the fouling on the ship’s hull greatly decreases her（）.
A. resistance
B. weight
C. speed
D. displacement
[单项选择]Which fire extinguishing agent has the greatest capacity for absorbing heat?（）
A. Water
B. Foam
C. Dry chemical
D. Carbon Dioxide
[单项选择]Which fire fighting agent has the greatest capacity for absorbing heat?（）
A. water
B. dry chemical
C. foam
D. CO2
[单项选择]Which of below device has the maximum coverage range（）
A. AIS
B. Radar
C. VHF
D. LRIT
[单项选择]The amount of freeboard which a ship possesses has a tremendous effect on its（）.
A. initial stability
B. free surface
C. stability at large angles of inclination
D. permeability
[单项选择]Before welding in a tank that has carried petroleum products，the tank must be certified by （）.
A. the Coast Guard
B. the ABS
C. the shipyard fire department
D. a certified marine chemist
[单项选择]Frames to which the tank top and bottom shell are fastened are called（）.
A. floors
B. intercostals
C. stringers
D. tank top supports
[单项选择]Before welding can be done in a tank that has carried petroleum products，a certificate must be obtained from（）.
A. the Customs
B. the Register Bureau of Shipping
C. the Shipyard Fire Department
D. a certified gas chemist
[单项选择]Which tackle arrangement has the LEAST mechanical advantage（）.
A. Single whip
B. Gun tackle
C. Luff tackle
D. Twofold purchase
[单项选择]A tank which carries liquid is dangerous to the stability of a vessel when it is（）.
A. low in the vessel
B. completely empty
C. completely full
D. slack
