相须和相使的主要区别是什么

明天的球赛小军赢的可能性是50%，说明明天小军输赢的可能性相等．______．

—Why do you like this animal?             

—______ they are smart and beautiful.           [ ]

A. Because                 

B. So          

C. If                              

D. But

阅读理解。

1. What does the word "pump" mean in "He ran in every five minutes to pump me about the case"?

A. Talk with.

B. Ask for information.

C. Listen to.

D. Provide with evidence.

2. When Sally says "The TV program kept pumping out commercials", she may be _____.

A. excited

B. interested

C. annoyed

D. worried

3. What will the government most probably provide if it is engaged in a pump-priming program?

A. Sums of money.

B. Raw materials.

C. Human resources.

D. Media support.

4. When Sylvia says "His speech was OK but it had no real punch", she thinks it was not _____.

A. fluent and impressive

B. logical and moving

C. informative and significant

D. interesting and powerful

燃气的燃烧特性指标包括华白指数和（）。

A、发热指数

B、燃烧成分

C、燃烧速度

D、燃烧势

相图是平衡图,反映材料在平衡状态下相与组织的变化规律