发电机组第一次启动或停机较长时间后再次启动，应先用手泵排尽燃油系统的空气。
参考答案：对
根据汉语提示选择句子。
1. 自然公园里有一片森林。[ ]
A. There is a forest in the nature park.
B. There is a river in the nature park.
C. There is a lake in the nature park.
2. 城市里有一个自然公园。[ ]
A. There is a city in the nature park.
B. There is a nature park in the city.
C. There is a forest in the city.
3. 公园里有小路吗？ [ ]
A. Is there a path in the city?
B. Is there a path in the park?
C. Is there a river in the park?
标准公开明确，机会平等、效率较高的人员任用方式是( )。
A．委任
B．选任
C．聘任
D．考任
