20. There are many ……… in the research laboratory.
(EQUIP)
V. Read the text and then choose the best options to answer each question.
(1.0/10)
Wood fuel is wood used as fuel. The burning of wood is currently the largest use of
energy derived from a solid fuel biomass. Wood fuel can be used for cooking and
heating, and occasionally for fueling steam engines and steam turbines that generate
electricity. Wood fuel may be available as firewood (e.g. logs, bolts, and blocks),
charcoal, chips sheets, pellets and sawdust. The particular form used depends upon
factors such as source, quantity, quality and application. Sawmill waste and
construction industry by- products also include various forms of lumber tailings.
Wood may be burned in a furnace, stove, fireplace, or in a campfire, or used for a
bonfire. Wood is the most easily available form of fuel, requiring no tools in the case
of picking up dead wood, or little tools, although as in any industry, specialized tools,
although as in any industry, specialized tools, such as skidders and hydraulic wood
splitters, have evolved to mechanize production. The discovery of how to make fire
for the purpose of burning wood is regarded as one of humanity’s most important
advances.
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