问题
多项选择题
AGC控制方式包括：（）
A、恒定频率控制FFC（Flatfrequencycontrol）方式
B、恒定联络线交换功率控制FTC（Flattie-linecontrol）方式
C、联络线功率和频率偏差控制TBC（Tie-lineloadfrequencybiascontrol）方式
答案
参考答案：A, B, C
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AGC控制方式包括：（）
A、恒定频率控制FFC（Flatfrequencycontrol）方式
B、恒定联络线交换功率控制FTC（Flattie-linecontrol）方式
C、联络线功率和频率偏差控制TBC（Tie-lineloadfrequencybiascontrol）方式
参考答案：A, B, C
One day, a teacher was speaking to a group of students about how to manage time. He gave such an interesting example that his students would never 26 . He put a wide-mouth jar(罐) on the table. Then he 27 some rocks and carefully placed them into the jar, one at a time. When 28 rocks would fit inside, he 29 , “Is this jar full?” Everyone in class shouted, “Yes.” “Really?” The teacher pulled out a bag of small stones. He put 30 small stones in and shook the jar. The small stones went 31 into the spaces between the big rocks. He then asked the group 32 , “Is this jar full?” “Probably not,” one of them answered. “Good!” the teacher replied. He brought out a box of sand and 33 some sand on the jar and it went between the rocks and small stones. Again he asked the 34 question, “Is this jar full? “No,” the class shouted. Once more the teacher said, “Good.” He poured a cup of water into the jar 35 it was full. The he asked, “What is the point here?” One student 36 his hand and said, “The point is that if you try really hard, you can 37 put more things in.” “No,” the teacher replied, “that’s not the 38 . What I want to tell you is that if you don’t put the big rocks in first, you will never get others in at all. 39 are the ‘big rocks’ in your life? Time with your friends, your education or your dreams? Remember to put the 40 in first, or you’ll never get others in at all?”
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