252
7.
The products of light distillates are… .
A. jet fuel and stove oil B. asphalt C. grease D. butane
8.
The products of middle distillation are… .
A. jet, diesel, fuel oil B. methane C. propane D.
jet and stove oil
9.
Residual products are… .
A. heavy fuel oils
B. wax
C. grease D. diesel oil
10.
The most common type of pumps is … pump.
A. rod
B. pipe
C. production D. deep
2. Fill in the blanks with the proper grammatical forms.
1.
If you … very hard, you can master your skills.
Достарыңызбен бөлісу: