1-
PTU will operate if LEDP looses pressure.
2-
Depends on the location of the leak,yes you could loose all fluid from L system as its from the lower end of the reservoir.
3-
Left system supplies fluid for Nose wheel steering.
4-
You have only one PCU pressurized as only one System is functional.
7-
Will check the AMM & get back.
8-
Flow rate of EDP much higher than EMDP.
9-
EDP vane in pump will go to neutral position & stop fluid pumping.Not sure if the checklist permits resetting in flt.
11-
Reserve brakes comes from RH system.Accumulator pressure is Pneumatically pressurising the fluid for 2-3 brake applications.
12-
Spoliers are Symetrically operated on both wings for obvious stability reasons,So each pair gets INOP together.If not would need deactivation of the paired opposite side.Spoilers #1 & 12 are powered by Ctr system.
13-
L & R Reservoirs are located in their respective MWW.Ctr Reservoir is in the Wing body fairing aft of Left MWW.