From the passage, we can learn that the simplest controller action is（）

单项选择题Which kind of the following controllers is the most sophisticated controller?（）

A.Proportional controller
B.Integral controller
C.Derivative controller
D.PID controller

单项选择题The word “offset” most probably means（）

A.predetermined value
B.measured value
C.off-limit
D.sustained deviation

单项选择题TWO STEP CONTROLER ACTION is mainly（）

A.proportional control
B.integral control
C.derivative control
D.on-off control

单项选择题In the event of failure of an auxiliary such as a lubricating pump, the standby pump is started and put on the line automatically“the line” in this sentence refers to（）

A.fuel manifold
B.lubricating pipe line
C.auxiliary engine pipe line
D.generator output line

单项选择题Which of the following is NOT the advantages of the remote control and automation of engine operations?（）

A.Routine supervisory labor particularly the unproductive night-service labor is reduced
B.Engine mal-operation is automatically sensed and manned
C.The engine room need be manned at night in bad weather or close waters
D.Some remedial measures can be taken automatically