Which of the following is the first step in the using a pitot tube and gauge?
A. Close the petcock and ensure that it is tightened.
B. Read the velocity pressure reading from the gauge.
C. Open the petcock and ensure the air chamber is drained.
D. Edge the pitot tube blade into the stream with the small opening.
Answer: C. Open the petcock and ensure the air chamber is drained.
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