Exercise can trigger an asthma attack

Which of the following is inserted into a lock shackle and struck with a maul or flat-head axe until the padlock shackles break?

A. Rambar B. Pick axe C. Halligan tool D. Duck-billed lock breaker

Which of the following indicates a radiographic image that is black and white with few shades of gray in between?

a. Short resolution b. Long resolution c. Short scale d. Long scale