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问题 多项选择题

将柴油产品硫含量从0.20%降至0.05%，需要采取的措施是（）。

A、操作条件不变的情况下，大幅提高催化剂的活性

B、对于一个给定的装置，大幅提高反应温度

C、换用新型分配器，改善物流分配

D、降低空速，降低装置压力

答案

参考答案：A, B, C

填空题

读短文，用所给动词的适当形式填空。

     On the afternoon of May 28th, there was a car accident on Nathan Road. As a result, the road was

blocked (阻塞). The two drivers 1______ (quarrel) at that  time and both of them said that the other

was wrong. However, the other drivers were not interested in  2______(know) whose fault it was; they

were waiting impatiently and just wanted to be able  3______ (leave).

      Finally someone called the police. Two policemen soon arrived. They cleaned the road immediately

and tried to control (控制) the traffic.

      Then the police took the two drivers to the police station. The two drivers also had  4______ (take) the alcohol (酒精) test. Fortunately, they did not drink any alcohol before  5______  (drive).

Otherwise, the result would be more serious!
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单项选择题

闭合性肾损伤不应作下列哪些检查（）

A.静脉肾盂造影

B.动脉造影

C.CT

D.逆行肾盂造影

E.超声检查
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