更多"A (n) () is a chemical or electro-c"的相关试题:
[单项选择]A(n) () is a mechanical attack on the metal surface which may be due to a disturbance in the flow of the water over the blade of the propeller.
A. erosion
B. corrosion
C. pitting
D. dezincification
[单项选择]Some refrigeration systems have chemical moisture indicators installed in conjunction with the sight glass in the liquid lineIf excess moisture is present in the system, the indicator will ()
A. activate the driers
B. change color
C. secure the compressor
D. add a predetermined amount of liquid drier
[单项选择]I am()attack of pirates.
A. on
B. in
C. at
D. under
[单项选择]A portable dry chemical fire extinguisher discharges by().
A. gravity when the extinguisher is turned upside down
B. pressure from a small CO2 cartridge on the extinguisher
C. air pressure from the hand pump attached to the extinguisher
D. pressure from the reaction when water is mixed with the chemical
[单项选择]Dry chemical extinguishers extinguish class B fires to the greatest extent by().
A. cooling
B. smothering
C. oxygen dilution
D. breaking the chain reaction
[单项选择]A shipmate suffers a heart attack and stops breathing. You must().
A. administer oxygen
B. immediately check his pulse and start CPR
C. make the victim comfortable in a bunk
D. immediately give a stimulant,by force if necessary
[单项选择]Dry chemical fire extinguishers are effective on which type(s) of fire?()
A. Burning oil
B. Electrical
C. Paint
D. All of the above
[单项选择]Chemical Tankers are generally referred to the cargo ships constructed or adapted and used for the carriage of().
A. liquid chemicals in bulk
B. solid chemicals in bulk
C. chemicals in bulk
D. cargoes in bulk
[单项选择]According to the Chemical Data Guide,epichlorohydrin is a(n)().
A. corrosive
B. class B poison
C. oxidizer
D. explosive
[单项选择]The use of sinking and dispersing chemical agents for removal of surface oil is().
A. the most common method used in the United States
B. too expensive for common use
C. generally safe to sea life
D. authorized only with prior approval of the Federal On-Scene Coordinator
[单项选择]The major source of chemical contaminants in hydraulic fluid is ().
A. microscopic steel shavings
B. abrasive waste
C. anti-oxidant compounds
D. oxidation by-products
[单项选择]The success of an indirect attack on a fire depends on the().
A. size of the fire when initially observed
B. complete containment of the fire
C. cooling ability of the firefighting agent
D. class of the fire
[单项选择]To avoid impingement attack, care must be taken with the water () through the tubes of the heat exchangers.
A. temperature
B. velocity
C. density
D. viscosity
[单项选择]The attack on Pearl Harbor()the indignation of the whole nation.
A. raised
B. rose
C. aroused
D. arose
[单项选择]When the ship is under attack by pirates,or terrorists,()needs to be activated.
A. AIS
B. SSAS
C. SSP
D. SART