A-1 or A-one
QUIZ YOURSELF ON "WAS" VS. "WERE"!
Example sentences from the Web for A1
SGR-A1 scans autonomously, and once it detects suspected intruders alerts the operator.
The robot, built by Samsung, is known as SGR-A1, or Security Guard Robot A1.
This makes the SGR-A1 much more expensive than the average South Korean draftee private, who earns less than $100 a month.
If each SGR-A1 robot can stand watch for just two years, South Korea comes out ahead.
A1: Joshua, I think the most honest answer I can give to this two-part question is: Yes.
The east window in this church has been classed as the A1 of modern painted windows.Showell's Dictionary of Birmingham|Thomas T. Harman and Walter Showell
The increasing demand for graves led to the formation of the cubicula A1 to A6, as well as others in the interior of the area.The Catacombs of Rome|William Henry Withrow
This area, multiplied by 2, gives the same result as the sum of both wings on A1 and A2.
Computed from three sheets of tracings, A1 and A2 comprising the entire area of both wings; B, a single wing.
The position of the root of the wing.This is indicated on the tracing A1.