Heavy duty relays are not suitable as switching relays because they have:
A) Larger contacts with less resistance. B) Smaller contacts with less resistance.
C) Larger contacts with more resistance. D) Smaller contacts with more resistance.
C
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In a typical mineral soil in optimal condition for plant growth, approximately what percentage of the pore space would be filled with water and what percentage filled with air?
A) 25% water and 75% air B) 10% water and 90% air C) 50% water and 50% air D) 25% water and 25% air E) 90% water and 10% air
3.0 to 1.2
A) 2 : 5 B) 12 : 30 C) 30 : 12 D) 5 : 2
An advantage of turning between centers is that:
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