It is _______ to tell which is earth and which is sky.
A.enough easy
B.easily enough
C.easy enough
D.enough easily
C、easy enough
A.enough easy
B.easily enough
C.easy enough
D.enough easily
C、easy enough
第6题
某供应商关系模式为: Provider(PID,Pname,Tel,GoodsID,GoodsClassID,GoodsName,GoodsPrice)该关系模式应满足如下函数依赖: PID→Pname,PID→TEL,GoodsID→GoodsClassID, GoodsID→GoodsName,GoodsName→GoodsPrice则这个关系模式的主码为______。
A.(PID,GoodsName)
B.(PID,GoodsClassI
D.(PID,GoodsI(PID,GoodsPrice)
第8题
A.TEL:8675588888888
B.+8675588888888@ims. sz. cn
C.SIP:+8675588888888@ims. sz. cn
D.8675588888888
第9题
A.Disable BTS O&M
B.Disable BTS TEL
C.Disable RA
D.Disable TRE
第10题
One has to wait for 2 days or longer for a reply if he/she pays ______.
A.in person
B.by telephone
C.by fax
D.by post
第11题
Mother ______ us stories when we were young.
A. was used to tell
B. is used to telling
C. used to tell
D. used to telling