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单选题
DURING OPERATION OF THE CARGO DOORS:
A
The manual selector valve sends a signal to the LGCIU to energize the blue hydraulic pump which pressurizes the door actuators.
B
The manual selector valve energizes the electro-selector valve which pressurizes the door actuators via the hand pump.
C
The manual selector valve sends a signal to the LGCIU to energize the yellow hydraulic pump which pressurizes the door actuators.
答案解析
正确答案：C
解析：
题目解析
答案: C
解析: 选项C中提到，“The manual selector valve sends a signal to the LGCIU to energize the yellow hydraulic pump which pressurizes the door actuators”（手动选择阀向LGCIU发送信号，以使黄色液压泵通电，为门执行器提供液压压力）。这个选项解释了货舱门操作过程中液压系统的工作方式。选项A和B提到的是关于蓝色液压泵或电选阀的信息，与问题不太相关。
