1-62.
Although manufacturers strive to
produce hydraulic liquids that
contain no toxic chemicals, some
liquids contain chemicals that
are harmful.
How do these
poisonous chemicals enter the
body?
1.
Absorption through the skin
2.
Through the eyes or mouth
3.
Through inhalation
4.
All of the above
Learning Objective:
Recognize
various types of hydraulic
liquids and their particular
characteristics and uses.
1-63.
The bases of the most common
types of hydraulic liquids are
classified as
1.
synthetic, water, or
vegetable
2.
water , petroleum, or
synthetic
3.
water , petroleum, or
vegetable
4.
petroleum, vegetable, or
synthetic
1-64.
What is the moat widely used
medium for hydraulic systems?
1.
Petroleum-based liquid
2.
Synthetic-based liquid
3.
Vegetable-based liquid
4.
Water-based liquid
1-65.
Which of the following properties
of a hydraulic liquid can be
improved by additives?
1.
viscosity
2.
Chemical stability
3.
Lubricating power
4.
All of the above
1-66.
The fluid currently being used in
a hydraulic system that requires
a nonflammable liquid will
probably be a
1-67.
Which of the following statements
is/are true concerning synthetic-
based fluids?
1.
They will not burn
2.
They are compatible with most
commonly used packing and
gasket materials
3.
They may contain toxic
chemicals
4.
All of the above
1-68.
You have accidentally gotten a
synthetic hydraulic fluid in your
eyes .
You should flush your eyes
for at LEAST 15 minutes and seek
immediate medical attention.
1.
True
2.
False
1-69.
You are required to dispose of
contaminated synthetic fluid
while deployed.
HOW should you
dispose of the fluid?
1.
Pump it to the collecting,
holding, and transfer (CHT)
tank
2.
Place it in drums for
disposal ashore
3.
Pump it over the side
4.
Dilute it with soapy water
and pump it over the side
1-70.
Water-based fluids resistance to
fire depends on the vaporization
and smothering effect of steam
generated from water.
1.
True
2.
False
1.
synthetic-based liquid
2.
blend of water and oil
3.
petroleum-based liquid
4.
blend of petroleum and
vegetable oil
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