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【单选题】
需求的价格弹性是( )变化的百分比和价格变化的百分比的比值。
【判断题】
归因危险度百分比为暴露者中暴露所致的发病(死亡)率占暴露者发病(死亡)率的百分比
【判断题】
水、水泥、砂(细骨料)、石子(粗骨料)是普通混凝土的四种基本组成材料。( )
【单选题】
水泥胶砂强度检验方法(ISO法)规定,制备水泥胶砂试样的比例为水泥:标准砂:水=
【判断题】
劳动力参与率是指人力资源在总人口中所占的百分比。
【单选题】
建筑密度是指一块土地上( )与全部土地面积的百分比。
【单选题】
患儿腹泻中度脱水,失水占体重的百分比()。
【单选题】
My camera can be ____ to take pictures in cloudy or sunny conditions.
【单选题】
With the help of the government , a large number of people ---_______ after the flood in 1991.
【单选题】
A ____ is a person who ____ _____.
①
crime; commit; criminal
②
commit; criminal; crimes
③
commit; crimes; criminal
④
criminal; commits; crimes
【单选题】
The soldier was _____ of running away when the enemy attacked.
【单选题】
The short story ____ the heart of the little boy with its unusual plot.
【单选题】
_____their differences,the couple were developing an obvious and genuine affection for each other .
【单选题】
Those acting for the defendant proposed to appeal ____ the sentence.
【单选题】
Which sport has the most expenses ____ training equipment, players’ personal equipment and uniforms?
【单选题】
The pressure _____ causes Americans to be energetic, but it also puts them under a constant emotional strains.
【单选题】
We should make a clear ____ between the two scientific terms for the purpose of our discussion.