首页
登录
职称英语
The buyer of a certain mechanical toy must choose 2 of 4 optional motions and 4
The buyer of a certain mechanical toy must choose 2 of 4 optional motions and 4
游客
2024-01-12
54
管理
问题
The buyer of a certain mechanical toy must choose 2 of 4 optional motions and 4 of 5 optional accessories. How many different combinations of motions and accessories are available to the buyer?
选项
A、8
B、11
C、15
D、20
E、30
答案
E
解析
一购买机械玩具的顾客必须从4个可选择的机械装置中选择2个,且从5个附件中选择4个,问共有多少种不同机构装置和附件的组合可供这个顾客选择?
解:本题的正确答案为(E)。总的组合数为
转载请注明原文地址:https://tihaiku.com/zcyy/3356861.html
相关试题推荐
Acertainmayorhasproposedafeeoffivedollarsperdayonprivatevehiclese
Certainmessengermoleculesfightdamagetothelungsfromnoxiousairbytellin
Themostwidelyusedtherapyforacertaintypeofulcercompletelyhealssuchu
Acertaintypeofshrimphabituallyhoversaroundsuperheateddeep-seageysers,
Fromacertainfarmingregion,truckscancarryvegetablestomarketinNewMexi
Scientistshaverediscoveredcertainfoodcrops,oncecommonlycultivatedinthe
Notingthatthenumberofcrimescommittedinacertaincityhaddecreasedin19
Thetoxinproducedbycertainmarinesnailscontainsvariousproteins,oneofwh
Figuresissuedbythegovernmentofacertaincountryshowthatin1980thepubl
Inacertainmunicipality,ajudgeoverturnedasuspect’sconvictionforposses
随机试题
A.divisionB.sufficientC.constantD.depthsE.exteriorF.whereasG.stable
Adetectivestoryaffectsmequite(differ)______fromtheotherkindsofstori
HowtoSurviveaLayoffYou’velostyourjob,butit
患者,女,17岁,颏部外形发育不良,口唇闭合时口腔周围肌肉呈现紧张,面下1/3高
下列关于生物碱叙述错误的是A.酰胺生物碱几乎不显碱性B.脂肪胺显中等碱性C.季铵
制定进度计划的方法有横道图法和()。A、水平进度计划表 B、网络图法
在计算经营者的效益年薪时。()模式认为经营者的效益收入就是其经营的风险收入。A
真核细胞呼吸链位于A.线粒体外膜 B.线粒体内膜 C.细胞膜 D.核膜
水工建筑物中高桩码头,代替后方抛石棱体碎石反滤层的土工织物应采用()。A.土工膜
根据《建设工程施工合同(示范文本)》,对已缴纳履约保证金的承包人,其提交的竣工结
最新回复
(
0
)