3. There was only _______ set onboard, which inhibited the capability of the crew in fighting the fire. (A)PSC (B)SMS (C)SCBA (D)MSC

12. The principal reason for turbocharging is to increase the power output of an engine of given size and speed, by enabling the cylinders to be charged with air at an elevated pressure and, therefore, at a higher density than air at atmospheric pressure. What is the main purpose to use a turbocharger？ (A)To elevate the density of air in order to decrease the pressure in cylinder. (B)To elevate the pressure of air in order to decrease the density in cylinder. (C)To improve the power output of an engine of given size and speed by increasing the compressed air intake temperature. (D)To improve the power output of an engine of given size and speed by increasing the density of charged air.

3. There was only _______ set onboard, which inhibited the capability of the crew in fighting the fire.
(A)PSC
(B)SMS
(C)SCBA
(D)MSC

相關試題

相關試卷

3. There was only _______ set onboard, which inhibited the capability of the crew in fighting the fire.(A)PSC(B)SMS(C)SCBA(D)MSC

相關試題

相關試卷

3. There was only _______ set onboard, which inhibited the capability of the crew in fighting the fire.
(A)PSC
(B)SMS
(C)SCBA
(D)MSC