A mobile crane configured for personnel hoisting should have all of the following features except _____.

a. one allowing freewheeling of the hoist drum
b. boom-length indicator on a telescopic boom
c. boom-angle indicator
d. positive-locking outriggers


a. one allowing freewheeling of the hoist drum

Trades & Technology

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Cuttings' roots should be treated with what % of indolebutyric acid?

A) 0-0.7% B) 0.8-1.0% C) 1.1-1.7% D) 1.8-2.0%

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Which of the following is true as regards small businesses?

a. They are a relatively unimportant part of the U.S. economy. b. They are defined as businesses with fewer than 20 employees. c. They have high survival rates. d. All of the above are correct. e. None of the above are correct.

Trades & Technology

Which type of actuator uses an electromagnetic plunger to open and close a passage or move a linkage?

A) LED B) Transistor C) Solenoid D) Relay

Trades & Technology

The meat packing industry has a low incidents of cumulative trauma disorders (CTDs).