问题
单项选择题
空调与暖风系统延时继电器的作用是，（）
A.在发动机冷却液达到预定温度之前防止加热循环
B.在发动机冷却液达到预定温度之前防止制冷循环
C.在关闭点火钥匙后将各风门回复到原位
D.在发动机起动后转速稳定之前延迟空调系统的启动
答案
参考答案：D
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空调与暖风系统延时继电器的作用是，（）
A.在发动机冷却液达到预定温度之前防止加热循环
B.在发动机冷却液达到预定温度之前防止制冷循环
C.在关闭点火钥匙后将各风门回复到原位
D.在发动机起动后转速稳定之前延迟空调系统的启动
参考答案：D
| 根据图示选择正确答案，将其序号填入题前的括号内。 |
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