Before changing accessories or performing maintenance on a power tool, make sure _____
a. it is turned off
b. your hands are dry
c. to have a clean work surface
d. the power is disconnected
d
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The cylinder head bolts have been removed from an engine. The manufacturer of the engine requires replacement of these bolts for the installation procedure of the cylinder head. This is because:
A. They are torque-to-yield bolts. B. The bolts are likely to be dirty and rusty. C. The bolts have been updated. D. The bolt grade will be reduced after regular service and use.
If a mechanical drawing shows a scale of 1:4, what does this mean?
A. The drawing was finished on January 4th. B. The drawing has a four times scale. C. The drawing has a quarter scale. D. The drawing has a fourteen scale. E. none of the above
Which of the following are used to hold cargo items securely that are to be hoisted, lowered, or suspended?
A. slings B. cargo nets C. rug poles D. Johnson bars
Tunnel diodes are often referred to as ____ diodes.
a. Zener b. IMPATT c. Esaki d. Gunn