|
Author Question: A chain fall locks its elevated load in place using _____. a. an automatic brake b. the chain ... (Read 49 times) |
Did you know?
Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.
Did you know?
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
Did you know?
Thyroid conditions may make getting pregnant impossible.