Flat key mark: Key B16x70 GB1096-79, B represents ( ) flat key
A: Double round head
B: Single round head
C: Square head
D: Class B accuracy
A: Double round head
B: Single round head
C: Square head
D: Class B accuracy
举一反三
- The mark of a common flat key is: KEY 12x80 GB 1096-2003, the type of this key is ( ) A: Round head common flat key B: Square head common key C: Half round head common flat key D: Other flat keys
- Good posture: Feet flat on floor, chair up to the table, back straight, head up.
- A ___ of something is a round flat piece or area of it.
- The key to control the symmetry axis of human body lies in( ). Its deflection and twist will harm the symmetry of human body. A: Spine B: Head C: Shoulder D: Lumbar
- Sometimes when I do not feel well, I will feel my head spinning. A: to have the sensation of turning in circles B: to turn round and round quickly