对液压油不正确的要求是（）。A.适宜的粘度 B.良好的润滑性 C.闪点要低 D.凝点
题型：单项选择题
问题：
对液压油不正确的要求是（）。
A.适宜的粘度
B.良好的润滑性
C.闪点要低
D.凝点要低
题型：单项选择题
“I can't believe what I'm hearing!” I thought to myself. Jeff was the last candidate （候选人） for president of Students’ Union. My best friend Tony came to me and said, “I'm 1 , Mike. I really thought you should be 2 .”  Later that day, I happened to pass Jeff in the dining room. I offered him a polite “ 3 ” and walked to my usual table. To my surprise, Jeff put his plate beside mine. “I'm, er-I'm just wondering 4 you would…consider coming to work on my team,” he said 5 . “You are really smart, and you would be a great manager.” “I don't think so,” I replied, feeling 6 . “Well, if you change your mind, we are meeting tomorrow,” he said before moving to 7 table. All that night, I thought about the offer from Jeff. Maybe being a part of the election process （选举过程）would give me a chance to make important changes at our school. I 8 to join them. My first goal was to 9 an attractive advertisement. Within a few days, we designed a 10 with Jeff's pictures showing him in a number of activities. No one could walk through any hallway without passing Jeff's smiling face. My next step was to 11 which new activities students would like to have at our school. Many of them wanted a chess club and a volleyball team. With the information I had collected, Jeff met with the headmaster. The headmaster 12 to add these activities to our school program. With my help, Jeff and our ideas were well received at school. An eighth grader said, “It'll be like attending a new school with Jeff as president.” Hearing these words made my heart filled with 13 . I had wanted to become president of Student Council to make a difference. I achieved that and more by working as a member of Jeff's team. He became the most popular candidate and I was a large part of his 14 . The fact that it has made a（n） 15 in other people's lives is the real prize. What a great feeling!
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