In most areas of the South, calves are born in the months of ____________________ and ____________________
Fill in the blank(s) with correct word
January, February
February, January
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Many of the early steam engines, called ____ engines, operated on the principle of creating a vacuum by condensation.
A. liquid B. compressor C. atmospheric D. cloud
When a load is placed on a truck with a C-channel, ladder frame, which ONE of the following is true of the C-channel rails?
A. neutral fiber is under compressional force B. upper flange is under tensional force C. lower flange is under tensional force D. the entire rail is under compressional force
Welding performed in a confined space without proper ventilation is _____ .
a. prohibited b. acceptable c. preferred d. desirable
The temperature of a solution will be estimated by taking n independent readings and averaging them. Each reading is unbiased, with a standard deviation of ? = 0.5°C. How many readings must be taken so that the probability is 0.90 that the average is within ±0.1°C of the actual temperature?
What will be an ideal response?