Daisy received a class assignment for writing statements in first-order logic form. What option should Daisy use to represent the sentence “All birds can sing” in first-order logic? (This is a test question on Plato's 'AI" Artificial Intellengence course)

A. ⱯSb

B. bⱯS

C. ⱯbS

D. BⱯs

E. ⱯSB

Fluids at rest possess no flow energy. a)- true b)- false

Have a greater impact on maintenance productivity than any other support group. (clo5) a)-the top management b)-inventory and purchasing c)-sub-contracting d)-cmms

Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?