at a maximum rate of two ounces per day
after mixing with an equal quantity of fresh water
if gather during or immediately after a hard rain
under no circumstance
第1题：
What represents poor sanitary procedures ________．
A.Keep and use a separate filling hose for potable（drinking）water
B.Locate potable（drinking）water tanks as low as possible in the bilge
C.Eliminate enclosed spaces in which trash，food particles，dirt may gather
D.After washing dishes with soap and warm water，sterilize them in water of at least 170℉（76.7℃）
第2题：
第3题：
The cooling liquid used for the cylinder may be referred to as _____.
A.jacket water
B.make-up water
C.boiler water
D.flushing water
第4题：
饮用水注入管（）
第5题：
第6题：
When collecting condensation for drinking water，______．
A.A sponge used to mop up and store condensation must be kept salt free
B.Only condensation on the bottom of the canopy should be collected
C.It should be strained through a finely woven cloth
D.Chlorine tablets should be used to make it drinkable
第7题：
第8题：
（ ）Her son __________ Coke, but now he __________ milk.
A．used to drink；is used to drinking
B．used to drinking；drinks
C．is used to drinking；used to drink
D．is used to drink；is drinking
第9题：
农村饮水安全（safe drinking water in rural area）
第10题：
a sponge used to mop up and store condensation must be kept salt free
only condensation on the bottom of the canopy should be collected
it should be strained through a finely woven cloth
chlorine tablets should be used to make it drinkable