Light enters the eye through a transparent layer called the _____.
a. retina
b. pupil
c. cornea
d. lens
c. cornea
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If an acetylene cylinder is tipped over, stand the cylinder upright and wait at least _____ minutes before using it.
a. 10 b. 15 c. 30 d. 45
Which of the following is a requirement for generator sets used in legally required standby systems?
a. A means of manual starting must be provided. b. The generator must carry at least 50% of the load. c. A means must be provided for automatic starting of the generator set(s). d. The standby system generator set must be started within 30 minutes after a power failure.
Tree wraps are used for permanent protection of trees with tender or thin bark during the winter months
Indicate whether the statement is true or false
A milling process is accomplished using either method X or Y. Method X has fixed costs of $10,000 per year with a variable cost of $50 per unit. Method Y is an automated process with a fixed cost of $5,000 per year and a variable cost of only $30 per unit. The number of units that must be produced each year in order for method Y to be favored is closest to: (choose one)
(a) Y will be favored for any level of production (b) 125 (c) 375 (d) X will be favored for any level of production