题目内容
（请给出正确答案）
[单选题]
If engine reverser cowls have been opened for maintenance action the:（）
A.Slats must be retracted
B.Flaps must be retracted
C.Slats and flaps must be retracted
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题目内容
（请给出正确答案）
A.Slats must be retracted
B.Flaps must be retracted
C.Slats and flaps must be retracted
答案
更多“If engine reverser cowls have been opened for maintenance action the:（）”相关的问题
第3题
A. heat-api主要是提供heat rest api服务，将接受的api请求发送到heat engine去执行
B. heat-engine将发送的请求在openstack中启动资源
C. heat-api-cloudwatch是用于监控编排服务
D. heat-init用于和数据库直接交互
第4题
A.Createtablet_myisam(idint(10)auto_increment,namevarchar(10),ageint(3),primarykey(id))setengine=MyISAM;
B.Createtablet_myisam(idint(10)auto_increment,namevarchar(10),ageint(3),primarykey(id));
C.Createtablet_myisam(idint(10)auto_increment,namevarchar(10),ageint(3),primarykey(id))engine=MyISAM;
D.Createtablet_myisam(idint(10)auto_increment,namevarchar(10),ageint(3),primarykey(id)),MyISAM;
第5题
All the parts are dependent on each other and work together for the accomplishment of the total business of the machine.The locomotive must be provided with fuel, such as coal or wood or other combustible(易燃的)substance，the consumption of which provides the force or energy of the machine.The animal body must be provided with fuel, which is called food, which similarly provides the energy of the animal.
Oxygen must be provided for the combustion of the fuel in the locomotive and of the food in the body.The locomotive is composed of special parts，the fire box for the storage and combustion (燃烧)of fuel; the steam pipes for the carriage of steam; the wheels for locomotion (移动); the chimney for throwing off waste.
The animal body is similarly composed of such parts as the stomach for the storage and digestion of food, the organs for the throwing off of waste water, the blood vessels for the carriage of oxygen and food-holding blood, the legs or wings for locomotion.
1.The body of an animal is like a locomotive in that ().
A.it is composed of many parts that work just like different parts of a locomotive
B.it can do some particular kind of work
C.it works like all the machines in the world
D.both the animal and the locomotive need coal or wood as their fuel
2.Every part of the animal body().
A.works independently
B.works dependently on each other
C.looks like the same as that of a machine
D.has the same structure as that of a machine
3.The energy of an animal is provided by().
A.throwing off waste
B.the combustion of fuels such as coal or wood
C.consumption of food
D.the carriage of blood
4.The function of animal s legs is like__of a machine.
A.the wheels
B.chimney
C.steam pipes
D.the firebox
5.The steam pipes of a locomotive work like the()of an animal body.
A.stomach
B.blood vessels
C.legs
D.wings
