When water has been entering the combustion chamber from a leaking head gasket or a crack in the head, there will be carbon on the surfaces of the combustion chamber and piston.
Answer the following statement true (T) or false (F)
False
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Short-term or immediate effects of human exposure to poor IAQ may _____.
a. show up years after the exposure b. be severely crippling or fatal c. occur after a single, high-dose exposure d. require long-term medical treatment
Technician A says that a good piston can be ruined by cleaning the grooves on a wire wheel. Technician B says an old, broken piston ring works well to clean the ring grooves. Who is right?
A. Technician A B. Technician B C. Both technicians D. Neither technician
The subsequent problems deal with the circuit below:
Note: Each question is independent and doesn't depend on results from previous questions. The only values known initially are the values provided in each question.If X=1, Y is
A. definitely 0 B. uncertain (depends on the power-on state and signal histories) C. definitely 1
Organisms which use carbon dioxide or carbonates for their carbon source and either sunlight or inorganic chemicals for their energy source are called ________
A) heterotrophs B) detritivores C) actinomycetes D) autotrophs E) facultative anaerobes