According to Bernoulli's principle, the total energy of a system is _____
A) constantly changing B) determined by the velocity
C) the same at all points if the flow rate is constant D) determined by the flow rate
C
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In the 1820s and 1830s, the public's attitude regarding political parties
A. was uniformly hostile to all political parties, regardless of the party or the region of the country. B. was deeply ambivalent. C. was more positive in the North than in the South. D. reflected growing acceptance of the wild contentiousness of political life. E. was that they were the best expressions of political ideologies.
Before operating a compressed-air tool for the first time, you should _____.
a. refer to the manufacturer's manual b. carefully disassemble and reassemble the tool c. look up the OSHA regulations d. ask a fellow worker how to use it
All residential alarm-sounding devices must have a minimum rating of _____.
a. 60dB at 10' b. 75dB at 10' c. 85dB at 10' d. 120dB at 10'
Disc brakes have many advantages, some of which are listed below. Which of the following statements does NOT apply to disc brakes?
A) They resist fading B) They are self-energizing C) They dissipate heat faster D) They are self-cleaning