Which of the following elements is a d-block element?
A: Copper
B: Chlorine
C: Aluminum
D: Sodium
A: Copper
B: Chlorine
C: Aluminum
D: Sodium
举一反三
- Which of the following metals is environmental friendly? A: iron B: aluminum C: copper D: titanium
- The following features that do not belong to floating elements are( ) A: Floating elements<br/>will be automatically set to block elements for display B: A floating<br/>element is in the same position in the vertical direction as when it<br/>is not defined as floating C: The floating<br/>element is horizontal, and it will be as close as possible to the<br/>edge of its parent element D: Block elements do<br/>not drill under floating elements and are not covered by floating<br/>elements.
- which elements belong to micro-elements？（ ） A: iron B: sodium C: zinc D: magnesium
- Deepdrawingismosteffectivewithductilemetals,suchas. A: aluminum B: brass C: copper D: mildsteel
- The following statement about floating is wrong (). A: The floating of<br/>elements is horizontal, which means that elements can only move left<br/>and right, but not up and down. B: Floating it is<br/>very useful in web page layout. C: Elements before<br/>floating elements will also be affected. D: The element after<br/>the floating element will surround it