Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）

A.size of the heat sink
B.temperature difference between the regions
C.size of the heat source
D.total heat of the system

A.the four-way control valve failing to shift
B.the bleeder valve sticking in the open position
C.cold hydraulic fluid
D.a clogged air vent falter on the oil reservoir

A.add fluid that is the same color as the fluid in the reservoir
B.add turbine oil because it is always a good substitute
C.add any oil that has the same viscosity as the hydraulic fluid
D.check the winch manufacturers instruction book