Which of the following best describes steam powered airplanes?
A) They were widely used until the 1970s, when jet fuel prices made other engines more efficient.
B) They are impractical because of the low power-to-weight advantage.
C) They were used for commercial air travel but were discontinued because of safety regulations.
D) They are under development and are expected to be the next phase of jet technology.
B
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In the United States, the percentage of married women working outside the home increased from __________ to ________ between the years 1900 and 2000
Fill in the blanks with correct word
The weather forecast says that a warm front is moving into town. While the front is in town, what kind of weather is likely?
A) warm B) cloudy with possible precipitation C) cool D) clear
Which type of map scale would be appropriate to use if the map were to be enlarged by photocopying?
A) written B) graphic C) representative fraction D) relative
Probability is the same as possibility.
Answer the following statement true (T) or false (F)