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【简答题】
随着人们生活水平的提高，私家车数量不断增加，给人们出行带来很多方便． （1）目前多数汽车使用的燃料是 _________ ． （2）汽车表面喷漆主要是为了防锈，其原理是 _________ ． （3）与传统汽车相比，太阳能汽车低碳环保，真正实现了零排放．制造太阳能汽车所用的太阳能电池需要大量的单质硅．单质硅是由石英固体（SiO 2 ）与碳在高温条件下反应制得的，同时生成一种可燃性气体，该反应的化学方程式为 _________ ． （4）下列汽车配件及用品中，用合金制作的是（填字母） _________ ． a．钢铁外壳 b．玻璃车窗 c．橡胶轮胎 d．真皮座椅．
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【简答题】什么是条件致病菌，条件致病菌引起感染的条件有哪些？
【单选题】Question 4 is based on the news report you have just heard.
A.
Recruit and train more firefighters.
B.
Pull down the deserted shopping mall.
C.
Turn the shopping mall into an amusement park.
D.
Find money to renovate the local neighborhood.
【多选题】一般情况下机械振动系统至少包括以下器件（ ）。
A.
具有惯性的器件
B.
能使具有惯性的器件受到恢复力作用的器件
C.
能使具有惯性的器件受到阻尼作用的器件
D.
能使具有惯性的器件振动衰减的器件
【单选题】Question 4 is based on the news report you have just heard.
A.
The lack of monitoring faulty equipment.
B.
The long history of the dam.
C.
The violent storm.
D.
The failure in the draining system
【单选题】Question 4 is based on the news report you have just heard.
A.
The darkness and cold.
B.
The heavy snow and fog.
C.
The biting winds.
D.
The ice all around.
【单选题】Question 4 is based on the news report you have just heard.
A.
It apologized to its customers.
B.
It was forced to kill its bees.
C.
It lost a huge stock of bees.
D.
It lost 2.5 million dollars.
【单选题】Question 4 is based on the news report you have just heard.
A.
Customers' higher demands.
B.
The inefficiency of employees.
C.
Increased variety of products.
D.
The rising number of customers.
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