Problem: Write an article based on this summary: Use your keypad to move and your mouse to aim. Master the jump, duck, and walk controls to avoid enemies. Press the mouse buttons to fire your primary and secondary weapons. Press “B” to bring up the gun menu when you begin playing. Press “K” or “U” to communicate with your team throughout the match.

Answer: Using the mouse is easy since it comes down to pointing and shooting like in many other games. Most people get tripped up a little with movement. The “W,” “A,” “S,” and “D” keys control your movement by default. "W" and "D" let you move forward and backward. “A” and “D” allow you to strafe, or move from side to side.  In Counter-Strike, you do not need to move forward or backward to strafe. That means that, if you’re standing still, pressing the “A” and “D” buttons is all you need to move to the left and right, respectively. Moving, turning, and shooting requires coordination. It may feel a little tricky at first, but you get used to it as you play. Test your mouse sensitivity. Most pros access the settings menu to move the sensitivity slider down to 2.0, giving themselves more precision when aiming. Start low and increase the sensitivity as you play. Running everywhere is a sure way to alert enemies to your presence. Hit the “Shift” key to slow your character down, then hit it again to return to running. Press “CTRL” to duck and the spacebar to jump. These keys are important to remember for map navigation. Mix some stealthy maneuvers into your playstyle to get the drop on enemies and reduce the amount of damage you take. You are only allowed to carry 2 weapons at a time in Counter-Strike. The left mouse button fires whatever weapon you are holding. The right mouse button activates the weapon’s secondary function, such as zooming in with a sniper scope. It’s a very simple shooting scheme that anyone can figure out with a few rounds of practice.  Press “Q” to switch between your primary and secondary weapon. The “R” button allows you to reload your weapon. Do this before you enter a firefight. You mainly switch weapons by purchasing them at the start of the round, but the game lets you take weapons you find by pressing “G.” Counter-Strike’s unique feature is its weapon economy. When you enter a game, you get $800. That money allows you to buy guns, grenades, and armor from the menu. The menu gives you a lot of toys to play with, so it may feel a little intimidating at first, but don’t feel pressured to buy anything.  Navigate the menu by clicking the prompts are using keypad numbers. You start with a pistol and a knife, so you don’t need to spend your in-game currency right away. Buying weapons and armor is all up to your preferred strategy. Some players get armor and grenades right away, while others save for a submachine gun. Communication is a key part of Counter-Strike, so press “K” when you need to activate voice chat. This only works if you have a microphone on your computer. For text chat, press “U” to call up the dialogue box, then type your message and hit enter to send it to your team.  Pressing “Y” allows you to send a message to the entire server. Don’t use this command while strategizing with your team. The game also has pre-recorded commands activated by typing words into the chat box. For instance, type “coverme” to make your character say “Cover Me!” Few players pay much attention to these commands, so they aren’t important to memorize.


Problem: Write an article based on this summary: Use the proper gas ratio. Preheat the copper. Initiate an arc to get the puddle. Add filler into the puddle. Move fast. Allow the copper to cool.

Answer: Depending on if you are using TIG (tungsten inert gas) or MIG (metal inert gas), and the thickness of your copper, you will need to adjust the ratio of your gas and temperature. As a general rule of thumb, copper under 2 mm should have argon gas and up to 160 A applied. If the copper is thicker, you will need to adjust the gas and amp by applying helium and upping the amp. Look online or welder’s handbook to determine the best ratio for your copper. If the welding isn’t going smoothly, try using 100% helium gas. It has a higher power compared to Argon, which allows for more heat to be applied to your copper. Since copper has a high thermal conductivity, high heat and preheating is necessary at thicknesses of over 0.01” (2 mm). Preheating is always measured in degrees and can be anywhere from 50 degrees Fahrenheit to 752 degrees Fahrenheit (10 degrees Celsius-400 Celsius ). To preheat, simply insert your copper into a furnace until the desired temperature increase has been found. Preheating allows the metal to cool slower after welding which works to produce a finer weld. This also reduces the risk of cracking. Once your safety gear is on and you’re ready to go, initiate the arc. Hold the arc steady for 2-3 seconds until the puddle appears.  When welding with copper, the arc should be at approximately 70 degrees to the copper. An arc is a shooting line of electricity created between the electrode and the material you’re welding, copper. As soon as the puddle has appeared, gently apply a small amount of filler through the arc to weld the metals together. Apply the filler by gently probing it into the pudding as the arc welds the copper together. The filler will liquify and mix in with the two copper, helping the metals weld together. Your choice of filler rod will be dependent upon the type of welding you are doing, however, it should always be a copper or copper alloy rod. The longer your puddle is present, the more time the copper has to oxidize. This can prevent a clean weld, so move quickly to get the welding completed. Cooling too fast can mean your weld will break or crack. Slowed cooling is assisted by the preheating of copper. Allowing the copper to come to a heightened temperature before welding will keep the fresh weld warm. If welding indoors, it is acceptable to let the weld air-cool if it has been preheated.  When welding in cold temperatures, you may to insulate your freshly welded copper to prevent it from cracking. The simplest way to slow cooling is covering the copper with a fibreglass blanket. Another method is stacking sandbags around the copper to help prevent heat loss. Never splash water or ice on a weld. If you don’t have time to patiently wait for the heat to dissipate slowly, don’t weld at all.


Problem: Write an article based on this summary: Flush out the ear if you are using ear wax softener. Avoid getting water in your ear while being treated for an infection. Store the ear drops at room temperature. Throw the ear drops out when they have expired.

Answer:
After a few treatments, fill a large bulb syringe with lukewarm water. Tilt the affected ear over the sink and press down on the bulb to flush out the ear with the bulb. You may notice little bits of ear wax coming out.  Do not do this if you are using ear drops for an ear infection. You can get a bulb syringe at a drugstore or pharmacy. The water should drain out of your ear as you flush. If it does not, stop flushing and contact a doctor. Your doctor can flush the ears for you. Do not go swimming while treating an ear infection. While showering, you can prevent water from going in your ear by plugging it with a cotton ball. Cover the outside of the ball with Vaseline. Choose a dry, dark location, such as a cabinet, to store your ear drops. Do not freeze or refrigerate the bottle unless otherwise directed by your doctor. Your ear drops should have an expiration date on the bottom of the bottle or on the label. Expired ear drops can develop bacteria that might cause a new infection.  In some cases, you may be advised to throw out the ear drops 4 weeks after opening. Write the date you opened it on the bottle with a marker to help you remember. If you used the drops to treat an ear infection, you may just want to toss the bottle after you have completed treatment to prevent reinfection.