混合气体的初始压力大于2.0MPa时，随着混合气体的初始压力增加，

搜题请搜索小程序“爱下问搜题”

问题单项选择题

混合气体的初始压力大于2.0MPa时，随着混合气体的初始压力增加，爆炸下限 ( )，爆炸上限( )。

A．变小；变小

B．变大：变大

C．变小；变大

D．变大；变小

答案

参考答案：C

填空题

看图阅读下面短文，补充完整。

It was Saturday. Han Mei needn't 1 to school. But 2 was busy with housework. After she got 3 ,

she first helped her mummy with the 4 . Then she went shopping with a 5 . In the market she 6 some

meat, eggs, tomatoes and some other vegetables. Later in the afternoon she had to 7 the supper for the

whole family. In the evening she sat at the 8 and did her 9 for one and half 10 . After she finished it,

she went to bed.

单项选择题共用题干题

女，5岁，3天前起发热，体温38℃，腹泻，3次/天，经服用感冒药，一度热退，腹泻停止。近2天起又发热，诉全身不适，今早肌注青霉素后右下肢不能站立，针刺有反应，膝反射减弱。

为及早明确诊断，应作下列何种检查（）

A.血培养

B.下肢X线摄片

C.脑脊液常规、生化检查

D.头颅MRI

E.肌电图