30. requires use of a powder ardened mortar requires use of a powder.actuated fortar __ a. water-cooled drill b. hammer drill c. high-speed drill bit d. anchor setter 31. extinguisher because removed extinguisher because __ ved from a fire a. the extinguisher can't be activated with- out it b. it shows the expiration date for the con- tents c. it contains the operating instructions d. it shows when the extinguisher was last serviced and inspected

## Step1<br />For question 30, we are asked to identify the tool that requires the use of a powder-actuated mortar. The options provided are a water-cooled drill, a hammer drill, a high-speed drill bit, and an anchor setter. <br /><br />## Step2<br />A powder-actuated mortar is a type of tool that is used to set anchors into hard materials such as concrete. This is typically done using a hammer drill, which is a power tool that can drill holes in hard materials.<br /><br />## Step3<br />For question 31, we are asked to identify the reason why a fire extinguisher is removed from a fire. The options provided are that the extinguisher can't be activated without it, it shows the expiration date for the contents, it contains the operating instructions, and it shows when the extinguisher was last serviced and inspected.<br /><br />## Step4<br />The reason a fire extinguisher is removed from a fire is that it contains the operating instructions. These instructions are crucial for the safe and effective use of the extinguisher.