胶料的操作焦烧时间是指什么?
参考答案:
操作焦烧时间是指橡胶在加工过程中由于热积累效应所消耗掉的焦烧时间。
根据括号中的要求改写下列句子。
1.We went to the post office to send a letter.(改为一般疑问句)
you to the post office to send a letter?
2.The pandas need to eat bamboos.(对画线部分提问)
the pandas need to eat?
3.It's important to learn English well.(改为同义句)
English well very important.
4.There are some animals in danger.(改为否定句)
There animals in danger.
5.We mustn't pollute rivers.(改为祈使句)
rivers!
患者男,50岁,主诉阵发性腹痛腹胀5小时,查体全腹膨隆,弥漫轻压痛,听诊可闻及气过水声,首先考虑的诊断为()
A.肠套叠
B.肠扭转
C.机械性肠梗阻
D.绞窄性肠梗阻
E.动力性肠梗阻