JT-C系列机车信号主机在接收()的载频切换信息时,可自动切换或锁定载频。
A.18.0HZ
B.19.1HZ
C.25.7HZ
D.27.5HZ
参考答案:C
John is an American boy. His family is in China now. John likes chocolates(巧克力) very much. But his mother doesn’t give him any. She thinks they are not good for him. But John has a very nice grandfather. The old man loves him very much, and sometimes he buys John some chocolates. Then his mother lets John eat them. She wants to make the old man happy. One Sunday evening John says in his room, “Please, God (上帝). Make them give me a big box of chocolates tomorrow. It’s my eighth birthday. ” His mother says,“God can’t hear(听见)you, my boy. ” “I know, but my grandfather is in the next room. He can hear. ”
小题1:John likes _____ very much.
A.reading books
B.eating
C.chocolates
D.God小题2:John comes from _____ .
A.China
B.America
C.Canada
D.England小题3:What day is John’s birthday?
A.Sunday.
B.Monday.
C.Tuesday.
D.Saturday.小题4:Who sometimes buy some chocolates for John?
A.His mother.
B.God.
C.His grandfather.
D.Himself.小题5:Where’s John’s grandfather on that day?
A. In the factory. B. On a farm. C. In the U. S. A. D. In the next room.
用手摸的方法检测人民币真假时主要抚摸()等部位
A.主景人像
B.凹印手感线
C.行名