CSS3中,不属于结构化伪类选择器的是( )。 A: :last-child B: :nth-type(n) C: :not D: :nth-child(n)

中国大学MOOC: (nth 2 (2 3 (4 5) 5))表达式的值为：A.2 B.3 C.(2 3) D.(4 5)

(nth 2 '(2 3 (4 5) 5))表达式的值为：A.2 B.3 C.(2 3) D.(4 5) A: 错 B: 错 C: 错 D: 对

There are four blood types； Type A, Type B, Type AB and Type O.

One of the parents is type A and the other is type B. the possible blood type of their children is A: It can only be type AB B: It can only be type A or type B C: It can only be type A, B and AB D: Type A, B, AB, O E: It can only be type AB or type O

下面哪个不是HTML5新增TYPE属性？ A: type="email" B: type="url" C: type="number" D: type="clock"

How to send a message? A: type the message→tap Send→type a phone number B: type a phone number→type the message→tap Send C: tap Send→type a phone number→type the message D: type a phone number→tap Send→type the message

下列哪个选项不能表示按钮( )（选择2项） A: type=submit B: type=type C: type=color D: type=button

Type A is a type of blood.

The common ventilation methods of working face are type , Z type, Y type, H type and so on.