Question

question 18 (5 points) listen what can be used to measure the alcohol content in gasoline? a) scan tool b) electronic tester c) either a graduated cylinder or an electronic tester d) graduated cylinder question 19 (5 points) listen technician a says that volatility describes how hard it is for gasoline to evaporate. technician b says that reid vapor pressure (rvp) is the pressure of vapor above fuel when the fuel is at 100 °f. who is correct? a) technician b b) technician a c) both technicians a and b d) neither technician a nor b

Explanation:

Question 18

To measure alcohol content in gasoline, a graduated cylinder can be used for a simple volumetric approach (e.g., using the principle of different densities or distillation - like methods in a basic setup), and an electronic tester can also be used (which might use chemical or electrical properties to detect alcohol concentration). A scan tool is for vehicle diagnostics, not fuel alcohol measurement. So either a graduated cylinder or an electronic tester is correct.

• Technician A: Volatility actually describes how easily a substance (like gasoline) evaporates, not how hard. So Technician A is incorrect.
• Technician B: Reid Vapor Pressure (RVP) is defined as the vapor pressure of fuel when it is at 100 °F. So Technician B's statement is correct.

Answer:

C) Either a graduated cylinder or an electronic tester

Question 19