没有明确的答复……
WOTC论坛的非官方灵能FAQ：
Q: What's this I hear about psicrystals gaining feats? Familiars dont'!
A: A psicrystal isn't a familiar, though. A familiar says that it is treated as if it were a creature of its master's HD for effects relating to HD, such as Sleep. A psicrystal's HD entry is "as master" -- meaning it actually gains HD. Every intelligent creature that gains hit dice gains feats. Conclusion: Psicrystals gain feats.
Note that a psicrystal doesn't gain hit points from these construct hit dice (its hit point entry is "half master's"), and its saving throws are unaffected (saving throw text "as master"), and that it does not gain skill points from them either (skill entry rules give it at least 4 ranks in certain skills, and otherwise identical skills to it's master's)... but in other regards, it gains Construct hit dice.
I should stress the point that this follows from game design principles. No WotC source has yet printed the statistics block for an advanced character's psicrystal, and it isn't explicitly called out in the rules that they do (it's clear implicitly).
See the update below if you want to break into intent discussions (although there's no need to; intent is crystal clear here).
什么？我要给我的灵晶仆再选个专长！
Q: What is a psicrystal's base attack bonus?
A: As a direct result of the way the rules work, it'll be 3/4 the psicrystal's hit dice -- in other words, the base attack bonus of a cleric/rogue/psychic warrior of a level equal to the sum of your psionic class levels.
(Note that if the psicrystal did not gain hit dice, no rules exist for the replacement of base attack bonus (familiars have such rules), and thus a psicrystal would be permanantly stuck with a +0 base attack bonus.)
后面还有一些，详情还是自己看吧
http://boards1.wizards.com/showthread.php?t=638776根据RAW，它会像构装体一样得到专长和BAB，可能还有每4HD的属性增长……
