Some higher efficiency boilers may have increased flue gas velocities and can result in corrosive flue gas blow through to the absorber.
Higher efficiency boilers increase the output.
Corrosive gas is harmless.
Black newspapers refused to cover Farrakhan.
A doctor takes someone's blood pressure in a clinic.
An adult is with a baby.
Three people are juggling in a theater.
There is no way to figure out where any interactions are located.
Poirot made everyone panic.