w÷[（1着-3÷7.w）×3w]．

以下可以用来检测邮箱地址的正则表达式是（）。 A: /^\w@\w\.\w$/ B: /^\w+@\w+\.(com|com.cn|net)$/ C: /^\w+@\w+.(com|com.cn|net)$/ D: /^\w+@\w+.\w$/

​下列的HTML中哪个可以产生超链接：​ 未知类型：{'options': ['[a url="http://www.w3schools.com"]W3Schools.com[/]', '[a]http://www.w3schools.com[/]', '[a href="http://www.w3schools.com"]W3Schools[/]', '[a]http://www.w3schools.com[/]'], 'type': 102}

‍下列的HTML中哪个可以产生超链接？（ ） ‏ 未知类型：{'options': ['[a url="http://www.w3schools.com"]W3Schools.com[/]', '[a]http://www.w3schools.com[/]', '[a href="http://www.w3schools.com"]W3Schools[/]', '[a]http://www.w3schools.com[/]'], 'type': 102}

一个土样含水W=15%，干重度Y=16kN/m[sup]3，孔隙率n=0.35，Y[sub]w=10kN/m[sup]3，试问该土样的饱和度为多少（）[/][/][/] A: 70.2% B: 68.5% C: 65.3% D: 72.4%

The most common division between primary and secondary education in the US is ___________.（ ） A: primary schools (Grade 1 to Grade 6) and middle schools (Grade 7 to Grade 12) B: elementary schools (Grade Kindergarten to Grade 8) and high schools (Grade 9 to Grade 12) C: elementary schools (Grade Kindergarten to Grade 3), middle schools (Grade 4 to Grade 6) and high schools (Grade 7 to Grade 12) D: grammar schools (Grade Kindergarten to Grade 6) and high schools (Grade 7 to Grade 12)

The private schools for primary-school children in Britain are called The Pre-prep schools and Prep schools in UK refer to ______. ( ）。 A: public elementary schools B: private elementary schools C: public middle schools D: private middle schools

如图,对于形成简单低共熔混合物的二元相图,当物系的组成为x,冷却到t℃时,固液二相的重量之比是: [A] w(s)∶w(l) = ac∶ab ; [B] w(s)∶w(l) = bc∶ab ; [C] w(s)∶w(l) = ac∶bc ; [D] w(s)∶w(l) = bc∶ac 。https://p.ananas.chaoxing.com/star3/origin/1a8c9aa52c5e223dddbb53f9a4b4f917.jpg

下列选项可以作为SQL Server服务器名称的是[ ]。 A: 123com B: C: com 123 D: com? E: 123 F: _123com$

以下正则表达式，能用来检测邮箱地址的是（）。 A: /^\D\w{5,15}$/ B: /^\d{11}$/ C: /^\w{6,16}$/ D: /^\w+@\w+\.(com|com.cn|reg|net)$/