10.推進軸系中間軸承的潤滑方式，由油盤式取代油環式的潤滑方式，其優點為何？ (A)防止滑油漏出軸承 (B)減少軸頸的的磨損 (C)在低轉速時潤滑效果較好 (D)使其具有較高的剛度

10.推進軸系中間軸承的潤滑方式，由油盤式取代油環式的潤滑方式，其優點為何？
(A)防止滑油漏出軸承
(B)減少軸頸的的磨損
(C)在低轉速時潤滑效果較好
(D)使其具有較高的剛度

答案：登入後查看
統計： A(30), B(41), C(231), D(7), E(0) #787835

詳解 (共 1 筆)

啥時能上岸

B1 · 2024/02/24

#6033530

高速柴油機油環式

低速柴油機油碟式

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.

10.推進軸系中間軸承的潤滑方式，由油盤式取代油環式的潤滑方式，其優點為何？
(A)防止滑油漏出軸承
(B)減少軸頸的的磨損
(C)在低轉速時潤滑效果較好
(D)使其具有較高的剛度

詳解 (共 1 筆)

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