更多"Before welding can be done in a tan"的相关试题:
[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]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]Before welding is permitted on a fuel tank, it must be certified or declared （）
A. safe for becoming rounded
B. safe for hot work
C. not safe for personnel
D. not safe for hot work
[单项选择]The shut off valve at the gasoline tank which can be operated from outside the tank space （）.
A. controls the amount of gasoline to the engine
B. shuts off the gasoline supply at the tank
C. is used if the gasoline tank leaks
D. All of the above
[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]A tank which has been sealed for a long period of time can be dangerous because （）.
A. steel surfaces consume oxygen by rusting
B. sealed tanks usually form a vacuum
C. moisture condenses in the tank, displacing the oxygen
D. most tank coatings give off poisonous vapors in the presence of moisture
[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]When inspecting a tank barge to see that it has all the required fire extinguishers and other safety items aboard，which of the following is the best source for determining what is required? （）
A. The supervisor in charge of the dock to which the barge is tied up
B. Part 38 of the Rules and Regulations for Tank Vessels
C. The Certificate of Inspection of the barge
D. The local fire marshal
[单项选择]A cargo tank that is initially gas freed，can be inerted by introducing inert gas by a process known as（）.
A. dilution
B. displacement
C. precipitation
D. Either A or B
[单项选择]Who has done your hair，Susan?（）
A. My hair has been done
B. That hair stylist
C. My hairstyle is cool
D. I have it cut
[单项选择]（）they are doing has never been done before.
A. That
B. What
C. Why
D. Whether
[单项选择]No repairs can be done without the harbor master’s（）.
A. approval
B. authorization
C. consideration
D. discussion
[单项选择]No repairs can be done without the Harbor Master’s（）.
A. approval
B. authorization
C. consideration
D. discussion
[单项选择]He has never done this type of work before; I am not sure how he will fit（）with it.
A. in
B. on
C. into
D. up
[单项选择]He has smoked for so many years that he can（）give it up
A. directly
B. mostly
C. exactly
D. hardly
[单项选择]The maximum number of passengers a Vessel may carry（）.
A. is stated on the vessel's Certificate of Inspection
B. is the number authorized in the Navigation Rules
C. depends on the number of lifejackets you carry
D. is the number authorized by your license
[单项选择]The maximum number of passengers a T-Boat may carry（）.
A. is stated on the vessel's Certificate of Inspection
B. is the number authorized in the Navigation Rules
C. depends on the number of lifejackets you carry
D. is the number authorized by your license
