获取第一个form元素的方法有哪些？（）
A: $（"form"）
B: $（"form：eq（0）"）
C: $（"form"）.eq（0）
D: $（"form：first"）
A: $（"form"）
B: $（"form：eq（0）"）
C: $（"form"）.eq（0）
D: $（"form：first"）
举一反三
- For oral administration, ChuanWu usually is used in A: Raw form, decocted for a long time B: Raw form, decocted in the wine C: Processed form, decocted first and for a long time D: Raw form, ground into powder E: Raw form, decocted first
- 商务信函的格式有以下几种:() A: Full-blocked form B: Semi-blocked form C: Full-indented form D: indented form
- Which of the following form of the English language is thought a free morpheme? A: The form non. B: The form un. C: The form nil. D: The form neg.
- The DNA structure exists in three forms: __________________. A: A form B: B form C: C form D: Z form
- The function of the Caption attribute of the form is (). A: Ensure the title of the form B: Ensure the name of the form C: Ensure the boundary type of the form D: Ensure the font of the form