Which of the eight diagnostic steps for locating an engine performance problem is performed first?

a. perform a thorough visual inspection.
b. check for any stored diagnostic trouble codes (dtcs).
c. check for any technical service bulletins (tsbs).
d. verify the concern or complaint.

Which of the following statements is false? a. a class can directly inherit from class object. b. if the class you're inheriting from declares instance variables as private, the inherited class can access those instance variables directly. c. a class's instance variables are normally declared private to enforce good software engineering. d. it's often much more efficient to create a class by inheriting from a similar class than to create the class by writing every line of code the new class requires.