... with the noncon-
densable gases. The first may be a Roots blower or an oil-sealed rotary pump.
The second is a gas-ballasted, oil-sealed rotary pump. In the early days of indus-
trial freeze ... For small-scale production, vacuum
pans may be employed. For larger throughputs, two- or three-effect tubular or
plate evaporators may be used. If highly concentrated pastes are being pro-
duced, ......
... ………………………… wants to talk to you on the telephone. I
don’t know who it is.
B. -AL, -ABLE, AND -FUL
The suffixes -al, -able, and -ful can be added to the end of some words.
These suffixes mean that something ... adjectives by adding the suffixes -al, -able, and -ful
to the following words.
Spelling Note: Change y to i before -al and -ful.
noun (add –al) adjective verb (add -able) adjective
coas...