Crossword Puzzle Opening maneuvers

Clue: Opening maneuvers

Round opening? (ROROROYOURBOAT with 14 letters)
___ King (New York City Chinese take-out with an eye-opening name) (FOO with 3 letters)
Nostril openings (NARES with 5 letters)
Plant's tiny opening (STOMA with 5 letters)
Brief opening statement? (INTRO with 5 letters)
Form opening (UNI with 3 letters)
Hertz opening? (MEGA with 4 letters)
Duct opening? (OVI with 3 letters)
Opening with dexterity or valence (AMBI with 4 letters)
It follows a curtain opening (SCENEI with 6 letters)