题目: 汽轮机调节装置的任务是:在发电系统中使汽轮发电机组( );在工艺系统中满足工作机械经常改变转速的需要;对抽汽式汽轮机还要满足对外抽汽压力的要求。A.保持稳定的负荷 B.保持稳定的转速C.不振动 D.不超速 答案: 参考答案:B
题型:阅读理解 阅读理解。Mike 论坛版主 积分20878 帖子3065 状态离线资料 个人空间 短信息 加为好友 I want to be a traveler. I want to go traveling in Korea and China. I can enjoy the culture and food in the two countries.Annie论坛版主积分20880帖子3799资料 个人空间 短信息 加为好友 James Cameron is a famous director. His film Avatar is popular withpeople all around the world.1 want to be a director like him.1 want to makea film betterthan Avatar.Steve论坛工作组积分10254帖子2506资料 个人空间 短信息 加为好友 I want to work in an old people's home. I can read newspapers, clean the house or wash clothes for them. I want to make them have a happy life.Juice论坛工作组积分6541帖子650资料 个人空间 短信息 加为好友 I want to be a barber (理发师). I want to make my hair different every day. I can have long curly hair on Monday, and on Tuesday I can have short blond hair. That's fun, isn't it? 1. Mike wants to go to Korea and _____. A. Japan B. China C. France D. England 2. _____ wants to be a director. A. Mike B. Annie C. Steve D. Juice 3. Juice wants to make her hair _____ on Monday. A. short blond B. short curly C. long blond D. long curly 4. What does the word "director" mean in Chinese? A. 演员 B. 导演 C. 制片人 D. 职员 5. Which of the following is TRUE? A. Mike likes all kinds of food and animals. B. Steve wants to help old people live a happy life. C. Juice likes traveling. D. Annie likes watching films. 查看答案
题型:单项选择题 甲、乙、丙、丁和戊五人聚在一起玩一种叫“三人玩”的游戏。游戏的每一圈只能由三人玩。下列是游戏的所有规则,它将影响到每圈游戏参加者的顺序和玩的圈数:①没有人可以连续玩三圈;②没有人可以连续两圈不玩;③每个人都必须玩三圈。如果甲、乙、丁玩第一圈,而乙、丁、戊玩第三圈,下面哪一位不能玩第四圈,而只能玩第五圈?()A.甲B.乙C.丙D.戊 查看答案
题型:单项选择题 某地区进行学龄儿童流脑疫苗接种率调查,首先将该地区分为好中差三类,然后在每类中随机抽1/10的学龄儿童进行调查,这种抽样方法属于A.多级抽样B.系统抽样C.分层抽样D.整群抽样E.单纯随机抽样 查看答案