爆炸是迅速的氧化作用并引起结构物破坏的()A.化学反应 B.能量释放 C.物理反应

题型:单项选择题

问题:

爆炸是迅速的氧化作用并引起结构物破坏的()

A.化学反应

B.能量释放

C.物理反应

D.电化学反应

考点:采气工考试采气中级工考试采气中级工考试题库
题型:单项选择题

短文改错(共10小题;每小题1.5分,满分15分)

此题要求改正所给短文中的错误。对标有题号的每一行做出判断:如无错误,在该行右边横线上画一个勾(√);如有错误(每行只有一个错误),则按下列情况改正:

此行多一个词:把多余的词用斜线(\)划掉。

此行缺一个词:在答题卡对应横线上写“在X词后加上所缺的词”。

此行错一个词:在错的词后划“→”,再写出改正后的词。

注意:原行没有错的不要改。

My husband and I had decided to buy a new house, and I 

made the appointment to see our bank manager. I’ve never met           小题1:   

him ago and was a little nervous. I drove into town and                  小题2:  

was luck enough to find a parking space outside the bank. I was     

小题3:  

just starting into the space while another car drove into it. I was very

小题4:  

angry. I opened my window and shouted the other driver. He              小题5:  

ignored me and walked away. It spent me 20 minutes to find               小题6:  

another space. As soon as I had parked the car. I rushed into             小题7:  

the bank. I was 10 minutes later for my appointment. I went to           小题8:  

the manager office, knocked and walked in. The manager was sitting        小题9:  

behind his desk. It was the man who has taken my parking space.      

小题10:  

题型:单项选择题

青少年处于生长发育期容易产生缺铁性贫血,可以补铁的方式很多,市售麦片中含有微量极细的铁粉,饮用这种麦片后,铁在胃液中与胃酸的主要成分盐酸(可用HCl表示)反应,生成氯化亚铁和氢气.

(1)写出该反应的化学方程式:______;

(2)缺铁性贫血中的“铁”是指______(填序号);

A.铁单质      B.铁原子      C.铁元素     D.铁分子

(3)已知有元素化合价升降的反应是氧化还原反应,元素化合价升高的物质被氧化.在上述反应中,化合价发生变化的元素有______(填元素符号),被氧化的物质是______(填化学式).

题型:单项选择题

“二分法”把文化分为()。

A.物质文化与精神文化

B.实体文化与观念文化

C.有形文化与无形文化

D.外显文化与内隐文化

题型:单项选择题

消化道平滑肌动作电位产生的主要原因是()

A.Na内流

B.Ca内流

C.K内流

D.K外流

E.Cl外流

题型:单项选择题

采煤工作面支护操作前检查注液枪时,发现()等问题时,应立即配合有关人员维修或更换

A.漏液

B.损坏

C.变形

D.无密封圈或出液不正常

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