Problem: Does "Avoiding these difficulties, commercial antennas are generally designed with fixed matching elements or feeding strategies to get an approximate match to standard coax, such as 50 or 75 Ohms." answer the question "A general matching network needs a minimum of how many adjustments to correct all components of impedance?"

A: no

Problem: Does "The cephalic phase occurs at the sight, thought and smell of food, which stimulate the cerebral cortex." answer the question "What are three digestions phases?"

A: no

Problem: Does "The result is that green light of wavelength 555 nm has an energy of 7005216000000000000♠️216 kJ/mol, a typical energy of everyday life." answer the question "How much energy is contained in the light to which human eyes are most sensitive?"

A:
yes