The water passage within a centrifugal pump is called the _____

What is the short-term exposure limit value?

a. The amount of a substance, measured in milligrams per body mass, that kills half of a group of laboratory animals to which the substance is administered during a preestablished time b. The concentration of a substance to which workers can be exposed continuously for a period of approximately 15 minutes without suffering irritation, chronic or irreversible tissue damage, or narcosis sufficient to increase the risk of accidental injury, impair self-rescue, or materially reduce work-related efficiency c. The concentration of a substance, measured in parts per million, that kills half of a group of laboratory animals to which the substance is administered during a preestablished time d. The concentration in milligrams per kilogram (mg/kg) of a substance that kills a laboratory animal within 48 hours

Which statement is accurate regarding the findings of the National Association of Area Agencies on Aging's 2010 survey of local governments?

A) Most communities struggled to provide basic preventive screenings and flu shots. B) Most communities were only able to maintain services and programs that existed before 2005. C) Most communities were expanding their "liveable" communities for all ages. D) Most communities had expanded their services since 2005 to include respite programs for family caregivers.