【单选题】某电路外电阻为 14 Ω,电路中的电流为 0.2A ,内阻为 1 Ω,则电源电动势为 ________V 。
【简答题】完型填空。 Simon lives on a farm in the country. Today, he is 1 visit his cousion Anna in the city. This is Simon's 2 trip on a train. This is also his first visit to the big city. He is very 3 . Anna live...
【判断题】耐火可塑料具有高温强度高和热稳定性好等优点。
【简答题】苏瑞是小学三年级的学生,平时学习成绩不太好,但上课时特别爱举手回答问题。有的时候,老师的问题还没有说完,他便把手高高举了起来,让他起来回答问题时,他又答不出来。老师课下和苏瑞聊天,问原因,苏瑞说:“班上的同学总笑我成绩不好,说我笨,我不服气,所以老师提问时我总举手,是想向大家证明我不笨。”老师了解了原委后,并没有批评苏瑞,而是和他定下君子协议:“以后老师提问时,如果真会回答,你举左手;如果不会,就...
【多选题】塑料薄膜具有 等优点,在包装材料中占有很重要的地位。
【判断题】Death of a salesman is one of Arthur Miller's famous plays.
【简答题】My dream home is very big and clean. It is near the . I can watch the sea and volleyball on the beach. My grandparents live us in this big house. room is the first floor(层), too. I always chat with th...
【单选题】Death of a Salesman is written by______.
【多选题】如图为实验测得的某电压源的伏安特性曲线,则该电源的电动势和内阻分别为:( )
【简答题】完形填空。 My dream home is very big and clean. It is near the 1 . I can watch the sea and play volleyball on the beach. On the 2 floor, there is a dining room. All the family 3 there. My grandparents live...