Co-firing is the process of burning biomass that is mixed with ____
a. petroleum or natural gas c. coal or diesel fuel
b. diesel fuel or natural gas d. coal or natural gas
D
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Most roots occupy the upper 12 inches of soil; most roots do not extend deeper than five to six feet below the soil surface
Indicate whether the statement is true or false.
Which of the following is a word used to describe an indication of how much work can be done in a specific amount of time, or a rate of doing work?
A) Energy B) Efficiency C) Power D) Voltage
How are water pumps in hydronic heating systems checked?
A) By measuring the water flow in the system B) By measuring the pump motor RPM using a digital tachometer C) By measuring the impeller RPM using a stroboscope D) By measuring the temperature of the pump motor
Match each item with a statement below.
A. type of modulation consisting of a sweep starting from the lower frequency in a channel to the highest frequency in the same channel B. a term used to describe sensors and actuators that are built with single-board computers and wireless interfaces C. defines classes of very low power, long range, IoT devices and communication protocols for gateways and sensors used in IoT networks D. a term used to describe devices that are intended to communicate with other devices, not with human beings E. a technology that makes use of wireless transmitters (tags) worn by people or permanently attached to movable assets to track their location and activity F. a digital cellular technology, often called LTE G. a wireless standard that enables devices to transmit data at an effective rate of 721.2 Kbps over short distances of up to 33 feet H. a technology developed to replace barcodes I. a specification for connecting computers, communication, and entertainment devices over short ranges, using the 60 GHz band J. a specification based on IEEE 802.15.4 that creates protocols and specifications for devices used for home automation