How do the following cultural methods of disease control work?
What will be an ideal response?
pruning - it removes the source of the infection
watering without wetting leaves - it prevents spread of disease organisms in water weeding- diseases frequently attack more than one species of plant, and weed removal can eliminate one of the host plants of the disease
removing dead leaves from around diseased plants - disease organisms frequently overwinter in leaf debris, so removing debris removes the source of re-infection
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La oscilación rápida de cargas suspendidas coloca al equipo en riesgo de sufrir un/a ____, que podría provocar un derrumbe.
a. menor radio de giro b. corte de energía c. carga lateral adicional d. aparejamiento inseguro
Guidelines for the respiratory protection program are available from the NIOSH office in Washington, DC.
Answer the following statement true (T) or false (F)
Which of the following forces are always present in an AC circuit?
a. Inductance and hysterisis b. Reactance and hysterisis c. Inductance and true power d. Apparent power and inductance
A single receptacle installed on a branch circuit with no other device or outlet shall have an ampere rating ____ of that circuit.
A. not more than the rating B. not less than 150% of the rating C. not more than 150% of the rating D. not less than the rating