Which code， inserted at line 14， allows the Sprite class to compile？（） A: Direction d = NORTH； B: Nav.Direction d = NORTH； C: Direction d = Direction.NORTH； D: Nav.Direction d = Nav.Direction.NORTH；

There is a special building in ancient Chinese cities named the Bell and Drum Tower, which is also the symbol of a city. It is generally built in which direction of the city ( ) . A: North B: South C: East D: Centres

【单选题】Since Chicago is north of Washington, and Washington is north of Charleston, Chicago is north of Charleston. A. Chicago is north of Washington. Washington is north of Charleston. _____________________________ ∴ Chicago is north of Charleston. B. Chicago is north of Charleston. Washington is north of Charleston. ____________________________ ∴ Chicago is north of Washington.

在HTML页面中有一个id为nav的，下面（）可以设置它向右浮动。 A: #nav{float : left} B: #nav{float : right} C: #nav{clear : left} D: #nav{clear : right}

.nav类只可以添加到<nav>和<div>元素上

以下( )语句可以使得nav元素浮动到左侧 A: B: nav{left:float} C: D: nav {float:left} E: F: nav {float-left: 200px} G: 以上都不对

以下可以控制id属性值为"nav"的元素的color属性为“绿色”的是（ ）。 A: document.getElementById("nav").style.color = "green" B: document.getElementsById("nav").style.color = "绿色" C: document.getElementsById("nav").style.color = "green" D: document.getElementById("nav").style.color = "绿色"

Backing means the wind ___ . A: is changing clockwise in direction B: is changing anticlockwise in direction C: is changing cyclonically or variably in direction D: emains unchanged in direction at the time

在CSS中有一个名为nav的类，下列选项中可以将该类样式应用到id为nav_header的标签上（） A: $（"#nav_header"）.css（’nav’） B: $（"#nav_header"）.class（’nav’） C: $（"#nav_header"）.addClass（’nav’） D: $（"#nav_header"）.cssName=’nav’

以下( )将使得nav元素位于z-index值为3的元素的顶部。 A: B: nav{z-index:high} C: D: nav{z-index:1} E: F: nav {z-index:4} G: 以上都不对