【多选题】液化石油气特性为()。
A.
液化石油气主要包括丙烷、丙烯、丁烷、丁二烯、异丁烯等。
B.
液体的密度约为水的一半,气体密度比空气大,泄漏出来易聚集在低洼处,随着地形填满沟、坑、下水道等,不易扩散,但可以漂移很长的距离。
C.
液化石油气由液相变为气相,体积扩大约250倍
D.
液化石油气易与空气形成爆炸性混合物,爆炸极限通常为1.5%~10%。
E.
液化石油气无色、无臭、无毒,但吸入后会造成恶心或头痛,吸入过多有麻醉性
【单选题】Which of the following statements is true?
A.
Every element in Guernica has a clear and accurate reference.
B.
Picasso never cared whether or not other people could understand what he painted.
C.
Picasso's mural Guernica has caused critics' arguments about its political implications.
D.
In Guernica, Picasso painted a Spaniard who looks extremely painful as well as angry.
【单选题】关于感染性尿路结石的特点,下列不正确的是
【判断题】Picasso created Guernica in less than a month.
【单选题】It can be inferred from the passage that Guernica was ______.
D.
a small country in Europe
【判断题】Picasso was commemorating a whole century of suffering by creating Guernica.
【单选题】After the bombing of Guernica, the Germans ______.
A.
managed to launch the Spanish Civil War
B.
frightened the whole world into silence
C.
went on to wipe out Dresden and Hiroshima
D.
did not admit their crime
【单选题】下面有关橡胶高弹性的描述,正确的是( )。