能表示人体大量喝水时,胃液的pH变化的图像是[ ]
A.
B.
C.
D.
答案:A
单句语法填空,每空只填一词
小题1:The settlement is home to nearly 1, 000 people, many of left their village homes for a better life in the city.
小题2:To stay awake, he finished a cup of coffee and ordered .
小题3:The church tower which _______ _______ (restore) will be open to tourists soon. The work is almost finished.
小题4:My uncle hesitated for a long time _______ he decided to buy a flat, as he was not quite sure whether the price of the house would go up or not.
小题5:Different methods to touch the keys will result _______ different display of the color.
在数据系统中,当总体逻辑结构改变时,通过改变什么,使局部逻辑结构不变从而使建立在局部逻辑结构之上的应用程序也保持不变,称之为数据和程序逻辑独立性。
A.应用程序
B.逻辑结构和物理结构之间的映像
C.存储结构
D.局部逻辑结构到总体逻辑结构的映像