[判断题]停放制动可以通过停放制动隔离塞门进行隔离。确认隔离后施加和缓解命令将不被识别，默认为停放缓解状态。
A.正确
B.错误

[单项选择]数据库中取出关系中的某些列，并取消重复的元组的关系运算为（）
A. 列取消运算
B. 投影运算
C. 联结运算
D. 选择运算

[单选题]质管部门反映DFDAU数据没有日期标记，但其他数据正常，可能是：
A.DFDAU的内部日期计数器故障；
B.GPS不能提供日期信息 ；
C.DFDAU的ARINC429总线故障；
D.左座安装了没有日期功能的时钟。

[多选题]根据《行政诉讼法》的规定，下列属于行政诉讼证据的是（）。
A.公安机关出具的治安管理处罚决定书
B.物价部门出具的价格鉴定意见
C.违法行为人实施违反治安管理行为的网络聊天记录
D.公安交管部门在处罚违反交通指示信号灯的违法行为人时制作的笔录

[判断题]( )装卸油气现场,因恶劣天气引起的积水、冰雪等应及时进行彻底清理,雷雨、大风等恶劣天气应尽量减少装卸油气作业。
A.正确
B.错误

[填空题]A boy doesn’t become a man at the same age everywhere over the (76)
world. Many people in America felt that a boy becomes a man (77)
since he is eighteen years old. It is difficult for an Eskimo boy. (78)
An Eskimo boy becomes a man when he kills his first polar (79)
bear. The polar bear, that may be nine feet long and weigh (80)
1,000 pounds, is a very dangerous animal. To kill one take a (81)
lot of courage and skills. The boy who must kill a polar (82)
bear developed the skills and courage. (83)
Polar bears give the Eskimos meat for eat, skins for clothing, (84)
and oil for heating and lighting. A boy who can provide
all these things certain becomes a man.