在表单中包含性别单选项，且默认状态为“男”被选中，下列正确的是（　）。 A: ＜input type="radio" name="sex" checked="checked"＞ 男 B: ＜input type="radio" name="sex" checked="enabled"＞男 C: ＜input type="radio" name="sex" enabled="checked"＞男 D: ＜input type="radio" name="sex" enabled="enabled"＞男

They packed and （）of the hotel． A: checked out B: checked over C: checked in D: checked into

It is essential that all these figures ______ twice. A: must be checked B: be checked C: is checked D: will be checked

It is essential that all these figures___twice. A: be checked B: are been checked C: being checked D: to be checked

It is essential that all these figures () twice. A: being checked B: are checked C: checked D: be checked

They packed and ______________ of the hotel. A: A. checked in B: B. checked out C: C. checked on D: D. checked by

They ______ at the hotel in less than half an hour after their arrival at the airport. A: checked out B: checked on C: checked up D: checked in

在HTML5中,checked="checked"可以省略为checked, readonly="readonly"可以省略为readonly。

在HTML5中,代码<input checked="checked" type="checkbox"/>,可以简写为( )。 A: <input checked type="checkbox"/> B: <input checked checkbox/> C: <input "checked" "checkbox"> D: <input "checked" type="checkbox"/>

If you ___for your flight, you need to cancel check-in to be able to change your flight. A) B) haady checked in C) have already chd alreecked inD) already checked in A: already check in B: have already checked in C: had already checked in D: already checked in