The most common contaminate of governor hydraulic fluid is （）.

51. Cargo that gives off fumes that may contaminate other cargo is known as a(n)____

Influenza A is one of four types of the virus, and it is highly _________. A: contact B: contaminate C: contagious D: contagion

4. contaminate, contaminated, contamination a. This river is badly by life wastes. b. Soil occurs wherever there is a chemical factory.

Sometimes it"s good to stop for a while to think about the past and ______ the future. A: contaminate B: contemplate C: consolidate D: contradict

Fill the blanks with the words given below. Change the form where necessary.nausea/ symptom/ infectious/ viral/ contaminate/ cough/ complication1.Influenza is an ( ) disease caused by an influenza virus.

The diagram shows fish kills that have been linked to toxic algal blooms. Based on the lettered fish kills, which of the following is FALSE regarding toxic algal blooms? A: Toxic algal blooms are problematic becasue they often contaminate the drinking water supplies of large cities nearby (location B). B: Toxic algal blooms are found near river deltas that contain agricultural runoff emptying into the sea (location B) C: Toxic algal blooms release toxins that can accumulate in the shellfish and have killed southern sea otters near D: Toxic algal blooms tend to have negative economic impacts on fisheries at B and E: When toxic algae die, the oxygen demand increases due to decomposition. This leads to loss of dissolved oxygen in the coastal areas like

智慧职教: Read the passage. Then listen to the news and fill in the blanks with the information (words, phrases or sentences) you hear.冠状病毒问答（WHO）: What is the correct way to wear and dispose of masks?If you decide to wear medical mask which is pleated and flat like this one, it is important to wear and discard it correctly. Otherwise, instead of protecting you, the mask becomes a source of infection because of the germs that may stay on it.To wear it correctly, you should locate the metal strip at the top of the mask, place over your nose bridge, secure the elastics around your ears, or tie the strings behind your head. Make sure it covers your nose, mouth, and chin. While in use, do not touch the front of your mask.To remove the mask, take the elastics from around your ears or untie the strings behind your head. Do not touch the front of the mask as it may be contaminated. Remove the mask and discard in a closed bin.Cleanse your hands with alcohol hand rub or soap and water. Hand hygiene should be done if you accidentally touch the front of your mask while wearing it. If your mask becomes damp or humid, replace it with a new dry mask. Never reuse single-use masks and discard them immediately into closed bins after each use.For more information on mask use and the New Coronavirus, check WHO website at who.int. u VOCABULARY1. mask n. a covering for part or all of the face, worn to hide or protect it 面具；面罩。例如：a gas / surgical mask防毒面具；医用口罩2. pleated adj. having pleats 打褶的；有褶的。例如：a pleated skirt有褶的裙子3. discard v. to get rid of sth that you no longer want or need 丢弃；抛弃。例如：The room was littered with discarded newspapers. 房间里到处是乱扔的报纸。4. contaminate v. to make a substance or place dirty or no longer pure by adding a substance that is dangerous or carries disease 污染；弄脏。例如：The drinking water has become contaminated with lead. 饮用水被铅污染了。If you decide to wear medical mask which is pleated and flat like this one, it is important to wear and (Q1) it correctly. Otherwise, instead of protecting you, the mask becomes a source of infection because of the (Q2) that may stay on it.To (Q3) , you should locate the metal strip at the top of the mask, place over your (Q4), secure the elastics around your ears, or tie the strings behind your head. Make sure it covers your nose, mouth, and chin. While in use, do not touch the (Q5) of your mask.To (Q6) , take the elastics from around your ears or untie the strings behind your head. Do not touch the front of the mask as it may be contaminated. Remove the mask and discard in (Q7) .(Q8) your hands with alcohol hand rub or soap and water. Hand hygiene should be done if you accidentally touch the front of your mask while wearing it. If your mask becomes damp or (Q9) , replace it with a new dry mask. Never (Q10) single-use masks and discard them immediately into closed bins after each use.For more information on mask use and the New Coronavirus, check WHO website at who.int.