29.舵機系統其安全裝置，當大風浪猛擊舵面時，舵面受到壓力而將安全彈簧一邊壓縮及一邊伸張，或將安全閥打開，使舵暫時失去控制而能自由轉動，藉以避免何種損壞？ (A)拉力 (B)壓力 (C)剪力 (D)過扭

9.Blowers are used with many diesel engines to supply the air necessary for combustion to the engine’s cylinders. When the pressure of this air is increased above atmospheric pressure, referred to as supercharging, the power output of engine is increased. In addition, in a two-stroke engine the air supplied by the blower helps to purge the engine’s cylinders of exhaust gas. This is referred to as scavenging. Based on these descriptions, please specify the correct statement. (A)The scavenging and supercharging processes share identical purpose of increasing the static pressure in the intake pipes. (B)The use of blow for scavenging and supercharging is due to its characteristics of high-pressure and low volumetric flow rate. (C)The blower for marine application is always the centrifugal type as it offers the high speed characteristic. (D)The scavenging in a two-stroke engine assists to purge the engine’s exhaust gas which has beneficial effect for combustion.

29.舵機系統其安全裝置，當大風浪猛擊舵面時，舵面受到壓力而將安全彈簧一邊壓縮及一邊伸張，或將安全閥打開，使舵暫時失去控制而能自由轉動，藉以避免何種損壞？
(A)拉力
(B)壓力
(C)剪力
(D)過扭

相關試題

相關試卷

29.舵機系統其安全裝置，當大風浪猛擊舵面時，舵面受到壓力而將安全彈簧一邊壓縮及一邊伸張，或 將安全閥打開，使舵暫時失去控制而能自由轉動，藉以避免何種損壞？ (A)拉力 (B)壓力 (C)剪力 (D)過扭

相關試題

相關試卷

29.舵機系統其安全裝置，當大風浪猛擊舵面時，舵面受到壓力而將安全彈簧一邊壓縮及一邊伸張，或將安全閥打開，使舵暫時失去控制而能自由轉動，藉以避免何種損壞？
(A)拉力
(B)壓力
(C)剪力
(D)過扭