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All of the following statements about the coolant pump are true, except:

All of the following statements about the coolant recovery system are true, except:

Technician A says modern thermostats remain closed until coolant temperature is as high as 180°F (82°C). Technician B says once the engine is completely warmed up, the thermostat has no effect on cooling system operation. Who is right?

A late-model hybrid vehicle with a motor-driven compressor has poor cooling. Technician A says that the best way to check system operation is with a scan tool. Technician B says that using an electronic leak detector may damage the motor insulation. Who is right? 

All of the following are good questions to ask the driver to help with diagnosis, except:

A musty smell inside of the vehicle may be caused by _____ on the evaporator.

All of the following statements about R-134a and R-12 are true, except:

Technician A says if the pressure is held constant, a substance will have different vaporizing and condensing temperatures. Technician B says higher pressures cause higher boiling points. Who is right?

All of the following statements about heat are true, except:

Tres cables se encuentran en los vértices de un cuadrado de lado a. Las corrientes e son salientes mientras que entrante. Si la componente horizontal del campo magnético en el punto P es 10 µT, determine la corriente .