Human reliability is usually much lower than technological reliability and is almost impossible to predict.
Answer the following statement true (T) or false (F)
True
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Suppose the minimum temperature reported in the newspaper is 2°C, but you notice ice crystals (frost) on the grass in the morning. Which of the following describes the most likely reason for this apparent discrepancy?
A. Temperature readings were taken in shelters more than 1.5 metres above the ground. B. The newspaper reported the wrong temperature. C. The thermometer was read before the minimum temperature was reached for that day. D. The thermometer was in error.
Niagara Falls were formed _______.
a - during Precambrian time approximately a billion years ago b - so long ago that the river's knickpoint is now gone c - after a series of spectacular earthquakes which are still helping the falls evolve d - by humans as a result of the damming of the St. Lawrence river e - after the retreat of the Pleistocene ice sheets a few thousand years ago
A glass greenhouse on the south side of a building is an example of
A. An active solar heating system B. Passive heat absorption C. Parabolic collection D. Charging fuel cells to increase efficiency in energy use E. Cogeneration
When a plant does not get enough water and starts to wilt, it
A) opens its stomata, stops transpiration, and generates oxygen but not carbon dioxide. B) opens its stomata, starts transpiration, and generates carbon dioxide but not oxygen. C) closes its stomata, stops transpiration, and no longer brings in carbon dioxide from the air. D) closes its stomata, starts transpiration, and no longer brings in oxygen from the air.