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【多选题】
影响化学反应速率常数的因素A.
浓度
B.
反应物本体
C.
温度
D.
生成物本体
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举一反三
【简答题】Many people prefer small towns. Life in a quiet, peaceful ________________ is more relaxing than life in a large, busy city.2. My final ________________ is Richmond, but I have to change planes in St....
【简答题】完形填空。 Jessie's dad took her to ride in a red, blue and yellow hot air balloon. It rose from the 1 and moved slowly across the sky. Jessie 2 forests and many beautiful lakes and rivers. 'Dad, I love it...
【简答题】根据短文内容判断正(T)误(F)。 From a plane you can see the fields, cities, mountains or rivers below. If we go into space, we see more and more of the earth. The moon is our neighbour in space. It is smaller t...
【简答题】I know the __ of the matter. Today our rivers and lakes are ___ ,and so are our land and air.
【单选题】患者,男,18岁,突然咯血400~500ml,查体及胸X线片无明显异常,你认为该患最可能的诊断是什么
A.
支气管内膜结核
B.
支气管肺癌
C.
支气管扩张症
D.
急性支气管炎
E.
肺梗死
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