Across
2. trees that have leaves
4. remove scratches from wood
8. make pencil marks to locate holes and cutting
10. holds work to table
12. applies finish to wood surface
13. measure length
14. trees that have needles
15. makes 90 degree or right angle
16. hold swork for operation
down
1. fills in sunken nail heads
3. remove saw marks
5. protect wood surfaces
6. drives in nails
7. joins two pieces of wood
9. easily removed fastener
11. make chamfer edges

Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.