田村有枣树7.41公顷,梨树比枣树多20%,田村有梨树多少公顷?(小数点后保留两位)
7.41×(1+20%),
=7.41×1.2,
≈8.89(公顷);
答:田村有梨树8.89公顷.
I have no ________ but to sell my car. [ ]
B. choices
C. alternative
D. alternatively
由自反律的得到的函数依赖均是()。
A.平凡多值依赖
B.平凡函数依赖
C.逻辑蕴含
D.4NF