• 2022-06-01 问题

    查询性别为男的信息,条件怎么写 A: where sex !=’男' B: where sex not in 男 C: where sex ='男' D: where sex between 男

    查询性别为男的信息,条件怎么写 A: where sex !=’男' B: where sex not in 男 C: where sex ='男' D: where sex between 男

  • 2022-06-16 问题

    d={'name':'alice','age':19,'sex':'F'},不能删除’sex’项目的操作的是() A: del d['sex'] B: d.pop() C: d.pop('sex') D: d.clear()

    d={'name':'alice','age':19,'sex':'F'},不能删除’sex’项目的操作的是() A: del d['sex'] B: d.pop() C: d.pop('sex') D: d.clear()

  • 2022-11-03 问题

    查询天心区的男学生的信息,正确的命令是? A: db.students.find({"address":"天心区"},{"sex":"男"}) B: db.students.find({"address":"天心区","sex":"男"}) C: db.students.find({$and:{"address":"天心区","sex":"男"}}) D: db.students.find({$and:[{"address":"天心区"},{"sex":"男"}]})

    查询天心区的男学生的信息,正确的命令是? A: db.students.find({"address":"天心区"},{"sex":"男"}) B: db.students.find({"address":"天心区","sex":"男"}) C: db.students.find({$and:{"address":"天心区","sex":"男"}}) D: db.students.find({$and:[{"address":"天心区"},{"sex":"男"}]})

  • 2022-05-29 问题

    关系SC(S,SNAME,SEX,SCORE,CNAME),从关系SC中检索男生(SEX =M)并且成绩大于等于60的学生姓名,下述表示( )是正确的。 Ⅰ.ЛSNAME(σSCORE>60□SEX=’M’(SC)) Ⅱ.σSCORE>=60□SEX=’M’(ЛSNAME(SC)) Ⅲ.ЛSNAME(σSCORE>=60□SEX=’M’(ЛSNAME,SCORE,SEX(SC))) A: Ⅰ和Ⅱ B: Ⅱ C: Ⅰ和Ⅲ D: Ⅰ

    关系SC(S,SNAME,SEX,SCORE,CNAME),从关系SC中检索男生(SEX =M)并且成绩大于等于60的学生姓名,下述表示( )是正确的。 Ⅰ.ЛSNAME(σSCORE>60□SEX=’M’(SC)) Ⅱ.σSCORE>=60□SEX=’M’(ЛSNAME(SC)) Ⅲ.ЛSNAME(σSCORE>=60□SEX=’M’(ЛSNAME,SCORE,SEX(SC))) A: Ⅰ和Ⅱ B: Ⅱ C: Ⅰ和Ⅲ D: Ⅰ

  • 2022-06-04 问题

    A lot of prefixes stand for certain numbers. For example, the prefix “tri-” means “3” and “sex-” has the meaning of “ 6”.Which of the following is the meaning of the prefix “ sept-”? ( ) A: 7 B: 8 C: 9 D: 10

    A lot of prefixes stand for certain numbers. For example, the prefix “tri-” means “3” and “sex-” has the meaning of “ 6”.Which of the following is the meaning of the prefix “ sept-”? ( ) A: 7 B: 8 C: 9 D: 10

  • 2022-06-15 问题

    STIs can be spread through___ A: penis + vagina = sex B: oral sex C: anal sex D: ubbing, touching genitals E: infected objects F: kissing, deep kissing

    STIs can be spread through___ A: penis + vagina = sex B: oral sex C: anal sex D: ubbing, touching genitals E: infected objects F: kissing, deep kissing

  • 2022-05-29 问题

    关系模式department(code,name)、employee(code,name,sex,dept,phone),查询“研发部”的员工信息,查询结果包括code,name,sex,phone,正确的语句是() A: selectcode,name,sex,phonefromemployeewheredept=’研发部’; B: selectcode,name,sex,phonefromemployeeem,departmentdewherede.code=em.deptandde.dept=’研发部’; C: selectcode,name,sex,phonefromemployeeem,departmentdewherede.code=em.codeandde.name=’研发部’; D: Selectem.code,name,sex,phonefromemployeeem,departmentdewherede.code=em.deptandde.name=’研发部’;

    关系模式department(code,name)、employee(code,name,sex,dept,phone),查询“研发部”的员工信息,查询结果包括code,name,sex,phone,正确的语句是() A: selectcode,name,sex,phonefromemployeewheredept=’研发部’; B: selectcode,name,sex,phonefromemployeeem,departmentdewherede.code=em.deptandde.dept=’研发部’; C: selectcode,name,sex,phonefromemployeeem,departmentdewherede.code=em.codeandde.name=’研发部’; D: Selectem.code,name,sex,phonefromemployeeem,departmentdewherede.code=em.deptandde.name=’研发部’;

  • 2022-06-16 问题

    页面中有一个性别单选按钮,请设置“男”为选中状态。代码如下:<;input type="radio" name="sex">; 男<;input type="radio" name="sex">; 女正确的是( ) A: $("sex[0]").attr("checked",true); B: $(" C: sex[0]").attr("checked",true); D: $("[name=sex]:radio").attr("checked",true); E: $(":radio[name=sex]:eq(0)").attr("checked",true);

    页面中有一个性别单选按钮,请设置“男”为选中状态。代码如下:<;input type="radio" name="sex">; 男<;input type="radio" name="sex">; 女正确的是( ) A: $("sex[0]").attr("checked",true); B: $(" C: sex[0]").attr("checked",true); D: $("[name=sex]:radio").attr("checked",true); E: $(":radio[name=sex]:eq(0)").attr("checked",true);

  • 2022-06-16 问题

    假设有如下html代码:&lt;body&gt;请选择性别:&lt;br /&gt;&lt;input type="radio" name="sex" /&gt;男&lt;input type="radio" name="sex" /&gt;女&lt;/body&gt;以下哪段代码执行后,将会选中“女”单选按钮? A: document.getElementsByName("sex").checked=true; B: document.getElementsByName("sex")[0].checked=true; C: document.getElementsByName("sex")[2].checked=true; D: document.getElementsByName("sex")[1].checked=true;

    假设有如下html代码:&lt;body&gt;请选择性别:&lt;br /&gt;&lt;input type="radio" name="sex" /&gt;男&lt;input type="radio" name="sex" /&gt;女&lt;/body&gt;以下哪段代码执行后,将会选中“女”单选按钮? A: document.getElementsByName("sex").checked=true; B: document.getElementsByName("sex")[0].checked=true; C: document.getElementsByName("sex")[2].checked=true; D: document.getElementsByName("sex")[1].checked=true;

  • 2022-06-07 问题

    The features of sex can be generalized as ______

    The features of sex can be generalized as ______

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