1. Pump에서의 Cavitation (공동현상) 에 대하여 기술하고 이로 생길 수 있는 문제점과 그 방지책에 대해 논하시오
- Cavitation이란
유체가 넓은 유로에서 좁을 곳으로 고속 유입하거나 벽면의 요철, 만곡부 등으로 흐름이 직선적이지 못할 때 유체는 저압이 되고 포화증기압보다 낮아지면 기화되어 기포가
Roller skates.
NORRIS 44. Stocky. Rugged looking. A
geophysicist. An incipient heart condition.
BENNINGS 38. A meteorologist. Dutiful. An old pro.
CLARK 24. The dog handler. Likes it here. Good
at his job.
SANCHEZ 21. The radio operator. Hates it here.
Lousy at his job.
In the winter of 1982 these men were commissioned by the
United States National Science Foundation to gather data
concerning the
roller skates down a dimly lit corridor. A parlour maid
looks down the hall where the girl has disappeared.
Sc 4 INT SCOTTISH HOUSE DRAWING ROOMDAY Sc 4
Three men wearing long grey aprons are fitting the packing for a
piano. On one of the mens arms is a tattoo of a whale in a wild sea.
Sc 5 EXT SCOTTISH HOUSE GROUNDS DAY Sc 5
The girl wearing her skates sits on a small black pony. An old man is
roller-coaster ride.
The world, the night, the lights,
everything was...
...fast.
Zip-a-dee-doo-dah.
Sounds like falling in love to me.
Sam said something like that.
First time we met.
Something about love and time.
- He said your heart...
...is like a clock measuring time...
...and ones emotional state
determines the flow of time.
It speeds it up or slows it down.
- So, time is a personal thing.
1. The basis on which posterity will rank our civilization is the quality of our ideas. Our position among civilizations is determined by the _________.
① location of our civilization ② value of our thought
③ influence we have ④ rigidity of our thought
⑤ quantity of our thought
2. As you drive a car on a straight road where the sun is beating down, you may seem to see a shim