- 三氧化硫的物理性质
- 共739题
The author compares the beluga whale with ______.
A.a bird
B.a giant
C.an elephant
D.a submarine
正确答案
A
解析
本题考查学生对生词的推断。文章第一段倒数第二句“And it does chirp”中,如果不知道“chirp”的词义,则下一句“In fact,it makes a great variety of squeaking,whistling,and clicking sounds,which have earned it the name of sea canary”指出,“它发出各种尖叫声、啸声和卡嗒声,因此获得大海金丝雀的美称”,可见作者把它比作了鸟儿,因此选A。
Which of the following proposals did the Ordinance of 1784 incorporate
A.New states should be admitted to the Union in numbers equal to the older states.
B.The Union should make the western region into tributary states.
C.New states should share the same rights in the Union as the original states.
D.The great western region should be divided into twelve states.
正确答案
C
解析
从文章首句“it embodied the principle that new states should be formed from the western region and admitted to the Union on an equal basis with the original commonwealths”提到,1784年法规定西部新加入的州应获得与最早加入联盟成员同等的地位,因此四个选项中只有C项说法正确,应选C。
少尿的定义是指尿量少于
正确答案
解析
本题考查的是少尿。少尿指的是尿量少于400ml/24小时或17ml/小时。
异常性支气管呼吸音常见于
正确答案
解析
本题考查的是异常性支气管呼吸音。它指的是在正常肺泡呼吸音部位听到支气管呼吸音,常见于肺组织内实变和肺内大空腔以及压迫性肺不张。
小肠作为吸收主要部位的原因是
正确答案
解析
小肠有利于吸收的条件有:①吸收面积大,黏膜上有许多褶皱,褶皱上有大量绒毛,使面积增大600倍;②消化期小肠绒毛的节律性的伸缩和摆动;③营养物质被消化为简单的可吸收物质;④食物在小肠内停留时间长。小肠黏膜的巨大表面积是吸收的解剖基础。
扫码查看完整答案与解析