9. The discharge ________ in the fuel ejection system could ensure that the residual pressure is maintained in the high-pressure fuel line between injections.
(A) needle valve
(B) check valve
(C) stop valve
(D) safety valve

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統計： A(19), B(38), C(1), D(13), E(0) #3674125

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#7127091
正確答案是 (B) check val...
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#7304318
The discharge釋放________ in the fuel ejection system could ensure that the residual殘餘 pressure is maintained維持 in the high-pressure fuel line between injections.
ㅤㅤ

9. 噴油系統中的排放 ______ 可以確保在兩次噴射之間，高壓燃油管路中仍能維持「剩餘壓力」（殘壓）。

(A) 針閥 (needle valve) — 位於噴油嘴端

(B) 止回閥 (check valve) 

(C) 截止閥 (stop valve)

(D) 安全閥 (safety valve)

 

利用止回閥，避免壓力回流洩漏

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