【单选题】He has made a very serious mistake in his planning. He has forgotten that the rule is only ______ to the U.S. citizen.
【单选题】与十进制 36 等值的二进制数是 ( ) 。
【简答题】( ) 1 Miss Smith is a friend of____. A. Mary's mother's B. Mary's mother C. mother's of Mary ( ) 2 This is a book of ___. A. Tom B. Tom's C. her ( ) 3 The post card is sent by ____. A. a friend of...
【单选题】This is a friend of ( ) .
【单选题】直线在三视图中的投影,其中在一个视图中的投影为直线,则在另两个视图中的投影为( )。
【单选题】This is a friend of __________.