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单选题
Flow control devices within the system, such as check valves, fuel pumps, accumulators, and relays, should be included.
A
Flow control devices within the system and relays should be included. These control devices include check valves, fuel pumps, and accumulators, etc.
B
Flow control devices within the system, fuel pumps, accumulators and relays should be included. These control devices include check valves.
C
Flow control devices within the system should be included. These control devices include check valves, fuel pumps, accumulators, and relays, etc.
答案解析
正确答案：C
