B777 Hydraulics

What does the PRIMARY L ENG hydraulic pump FAULT light indicate?

What does the DEMAND L ELEC hydraulic pump light indicate?

How many hydraulic systems are needed to power enough of the flight controls for safe flight?

If the left and right hydraulic systems are lost, can the center hydraulic system sufficiently power enough of the flight controls for safe flight?

Where are the sydraulic system quantities displayed?

Which of the following causes the RAT to deploy automatically in flight?

When the RAT deploys automatically due to system failures, what does it hydraulically power?

Autoland is inoperative for which of the following conditions?

What happens if both C1 and C2 DEMAND pump selectors are positioned to ON?