The minimum interpass temperature is usually the same as the ____________________ temperature.
Fill in the blank(s) with the appropriate word(s).
preheat
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During an IM240 emissions test the exhaust gasses are measured in:
A. Percentages B. Grams per mile C. Parts per million D. All of the above
____ air handlers permit the motor to operate at different speeds in accord with the demands of the system.
a. Variable-speed b. Outdoor c. Low temperature d. High pressure
Plants that are efficient at taking iron up from a calcareous soil are known to employ which of the following methods?
A) lower pH of their rhizosphere B) produce organic compounds that can form stable chelates with iron C) produce reducing agents that reduce Fe3+ to Fe2+ in the rhizosphere D) all of the above E) none of the above
Mudsills are used to support shores _____
a. if the ground is not frozen b. beneath each floor of the building c. if forms are to be left in place d. when a slab-on-grade has not been placed and cured