问题 问答题 简答题

拉深模试冲的试件外形尺寸不对,表面质量不好,是何原因?如何进行调整?

答案

参考答案:原因:

(1)坯料尺寸过大或过小.

(2)凸、凹模间隙不均匀。

(3)压边力过大或过小。

(4)凹模淬火硬度太低,表面粗糙度不好。

(5)定位板位置不对。

调整方法:

(1)重新更换坯料。

(2)重新调整间隙。

(3)调整压边力的大小。

(4)对凸、凹模进行抛光。

(5)重新调整定位板。

单项选择题
完形填空

What seemed like an unplanned comment about Syria's chemical weapons (武器) had a major effect on world events this week. American Secretary of State John Kerry spoke last Monday at a press conference in London. He was reacting to questions about possible American action to answer a chemical weapons attack believed to be likely in Syria. One reporter asked the secretary whether there is anything Syria's president can do to avoid an American military (军事的) strike.

"Sure, he can turn over every single bit of his chemical weapons to the international society in the next week."

Mr. Kerry made it clear that he was speaking theoretically, and did not expect anything like that to happen.

But Russia seized on the idea and persuaded Syria to do the same. That brought plans for American congressional (议会) votes on military action to a halt. President Obama has said he would accept a diplomatic settlement if it can be carried out. But that would likely take weeks, at least.

Mr. Obama has said the government of Syrian President Bashar al-Assad must be punished for breaking the nearly century old ban on the use of chemical weapons. He called for American action to prevent future use of chemical weapons in Syria. He suggested limited airstrikes on government targets. The airstrikes could happen quickly if Congress approves.

Joanna Kidd is a security expert with London's King's College. She says any move to place Syria's chemical weapons under international control would take a long time, if it could be done at all.

小题1:What does the author think of John Kerry’s statement at a press conference in London last Monday?

A.Theoretical

B.Practical

C.Unintended

D.Planned小题2:What does the underlined word “halt” probably mean?

A.stop

B.action

C.attention

D.debate小题3:According to the passage, which of the following statement is TRUE?

A.Russia thinks there was a chemical weapons attack in Syria.

B.Russia is against the American military strike on Syria.

C.Obama believes that a diplomatic settlement is on the way.

D.American Congress will approve Obama’s limited airstrikes.小题4:The belief shared by John Kerry and Joanna Kidd is________.

A.Bashar al-Assad’s administration should be punished for breaking the ban

B.Obama’s government has to prevent future use of chemical weapons in Syria

C.Syria's president can do nothing to avoid an American military strike

D.placing Syria's chemical weapons under international control is hard to achieve