防止瓦斯积聚应做好加强通风,加强检查和及时处理()。
A、瓦斯积聚
B、微风作业
C、瓦斯超限
D、电气设备失爆
参考答案:A
先通读下面的短文,掌握其大意,然后根据短文内容和所给首字母,在空格内填入一个适当的词,使短文意思完整。所填单词在横线上必须完整写出。
Jim is one of Mr Brown’s old f小题1:. Mr Brown asked Jim for dinner and he agreed. They were both very
h小题2: because they hadn’t s小题3: each other for years. Mrs Brown bought some meat and vegetables from the shop. They were talking in the s小题4: room while Mrs Brown was c 小题5: in the kitchen.
Suddenly she called Mr Brown into the kitchen and said something was wrong with the pot(锅) and asked him to buy one. He said sorry to Jim and l小题6:. He wanted to borrow one from his neighbor, but they were all
o小题7: . He had to go to the shop to buy a new one.
On his way to the shop, he saw a man selling pots by the road. He stopped to ask, ‘Are the pots of high quality(质量)?’ ‘Sure, sir,’ the man said, ‘I can show it to you.’ The man dropped a pot to the ground. Bad l小题8:! It was broken into pieces. The man was very c小题9: and said, ‘I have never s小题10: such a pot of low quality like it! I’d rather break it into pieces than sell it to you.
腰腿痛与下述哪一韧带的变化之间关系最为密切()
A.棘间韧带
B.黄韧带和后纵韧带
C.棘上韧带和棘间韧带
D.黄韧带和棘间韧带
E.黄韧带和前纵韧带