复吹转炉底吹Ar/N2,使钢中氧含量降低,从而渣中FeO量也就相应增加,易产生喷溅。

题型:判断题

问题:

复吹转炉底吹Ar/N2,使钢中氧含量降低,从而渣中FeO量也就相应增加,易产生喷溅。

考点:炼钢工炼钢工题库
题型:判断题

下列情况下,不对就业产生影响的是( )。

A.科学技术的进步

B.自然界的条件变化

C.经济的高速增长

D.人口过度增长

题型:判断题

.

  China to sell yuan bonds (国库券) abroad

  China has announced its first sale of government bonds yuan outside the mainland.

  The government will sell 6bn yuan of bonds in Hong Kong to “improve the international status of the yuan,” the finance ministry said.

  The sale is a milestone as China opens up its financial markets and promotes RMB as a world benchmark(基准点) .

  Hundreds arrested in deadly Uganda riots(暴乱)

  At least 640 people were arrested and 14 killed in fighting in Uganda’s capital between government forces and loyalists of a traditional kingdom. The number of people arrested for suspected roles in the three-day riots could go up because investigations are still under way, said Kale Kayihura, the nation’s police chief.

  “French Spiderman” conquered the 88-story Petronas Towers in Kuala Lumpur

  Now 47, Robert has climbed some of the tallest buildings in the world, typically without the aid of safety equipment. On Sept. 1, armed with nothing but the chalk on his hands and some good climbing shoes, the “French Spiderman” added the 88-story Petronas Towers in Kuala Lumpur to his impressive list—which now totals more than 70—of skyscrapers(摩天大楼) climbed up.

  Motorway lights go out

  The Highway Agency has decided to turn off lights at undisclosed locations between midnight and 5 a.m. from March. It has done so despite warnings from motoring groups and safety campaigners. Nine councils have already switched off some street lights or plan to do so to save money and cut carbon emissions (排放物).

64. We can learn from the passage that ____.

 A. China has sold 6bn yuan of bonds in Hong Kong

B. more suspected people will probably be arrested in Uganda

C. about 654 people took part in the Uganda riots

 D. the riots will last another three days

65. How many skyscrapers has Robert conquered so far?

 A. exactly 47         B. over 70          C. about 88          D. less than 158

66. The disadvantage of turning off motorway lights includes ____.

 A. saving money          B. cutting carbon emissions

 C. causing safety problems  D. decreasing the number of cars

67. All of the fields are mentioned except____ .

 A. politics      B. health        C. traffic     D. people

题型:判断题

哪个是最早评为世界文化遗产的()。

A.周口店北京猿人遗址

B.安阳殷墟

C.中国高句丽王城、王陵及贵族墓葬

题型:判断题

甲烷化反应器紧急停车后,床层温度降至150度以下时要进行氮气置换。

题型:判断题

手制动应处于制动状态。方向操纵杆放在前进档位置。

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