最典型的古代机械有桔槔、辘轳、翻车、筒车等提水机械；连机碓、水转连磨、水转大纺车等是属于水力机械。
参考答案：对
a reward of $1,000 will be given to can provide any clues to the case which has been investigated by the police for nearly half a year.
A．whoever
B．whomever
C．anyone
D．who
( )年制定并经过四次修改的现行宪法是新中国成立以来最完善的一部宪法。
A．1954 B．1978 C．1982 D．1999
