Gray cast iron has ()
A: high compressive strength
B: excellent machinability
C: good casting characteristic
D: all of these
A: high compressive strength
B: excellent machinability
C: good casting characteristic
D: all of these
举一反三
- The cylinder block is a complicated casting made of gray iron(cast iron) or aluminum. 这句话的意思是机体是复杂的灰铸铁或铸镁件。
- The properties of cast irons are as follows except . A: good castability B: poor mechanical properties C: good abrasion resistance D: poor machinability
- Cast iron carrier rings， （） machined grooves， are provided for all the pistons.
- Which of the following describes a material with high compressive strength but lowtensile strength A: tough B: B. brittle C: C. ductile D: D. malleable E: E. resilient
- 秦汉时期已经开始发展铁器成型技术，这句翻译为（ ） A: Iron casting technology has already been employed in Qin (220 to 205 BC) and Han dynasties (206 –220 BC). B: Iron casting technology has already been employed in Qin (221 to 207 BC) and Han dynasties (236 –210 BC). C: Iron casting technology has already been employed in Qin (221 to 207 BC) and Han dynasties (202 –220 BC). D: Iron casting technology has already been employed in Qin (221 to 207 BC) and Han dynasties (201 –227 BC).