Identify four ways that weeds are pests
What will be an ideal response?
Weeds are pests by harboring insects and disease, competing with agricultural plants for nutrients and water, blocking out sunlight, and by lowering the quality of the crop.
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?What is the usual ratio between the pattern and the cavity of a duplicating machine which is a specially modified vertical milling machine that cuts duplicate molds from a master pattern?
A. ?1:1 B. ?1:2 C. ?1:4 D. ?1:5
Las tuberías de vapor que se conectan con calderas se llaman _____ de caldera.
a. conducto b. colector c. descarga d. suministro
A service valve can be used to ____.
A. check the electrical service to the compressor B. isolate the refrigerant so the system can be serviced C. check the air flow across the evaporator D. check the ambient temperature at the condenser
An R410A system specifies a subcooling of 5°F at the current operating conditions. The technician measures a liquid pressure of 317 psig and a liquid line temperature of 95°F. The system is
A) undercharged B) overcharged C) charged correctly