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【单选题】
Mickey is considering buying a tape recorder. His utility function is U(x;y; z)=x+f(y)z:5 where x is the amount of money he spends on other goods, y is the number of tape recorders he buys, and z is the number of tapes he buys. Let f(y)=0if y<1and f(y)=8if y is greater than or equal to 1. The price of tape recorders is 20, the price of tapes is 1, and he can easily a ord to buy a tape recorder and and several tapes. Will he buy a tape recorder?
A.
He should buy a tape recorder at these prices, but if tapes were any more expensive, it would not pay to buy one.
B.
He should not buy a tape recorder.
C.
He is indifferent to buying a tape recorder or not.
D.
There is not enough information here for us to be able to tell.
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举一反三
【单选题】以下哪项是移动终端?( )
A.
智能电视
B.
移动WIFI路由器
C.
平板电脑
D.
充电宝
【多选题】病毒性心肌炎的常见病原体有
A.
柯萨奇病毒
B.
埃可病毒
C.
流行性感冒病毒
D.
EB病毒
【判断题】ONU具有出局智能路由功能。
A.
正确
B.
错误
【单选题】以下哪个 JSON 格式是正确的 :
A.
{"test":"hello"}
B.
["test":"hello"]
C.
{"test":"hello":"world"}
D.
{"test"}
【单选题】以下哪个选项是正确的json数组数据格式:
A.
[ {"name":"zhang", "password":"123"} {"name":"li", "password":"456"} ]
B.
[ {"name":"zhang", "password":"123"}, {"name":"li", "password":"456"} ]
C.
[ {name:"zhang", password:"123"}, {name:"li", password:"456"} ]
D.
[ {"name":"zhang", "password":"123"}, {"name":"li", "password":"456"}, ]
【多选题】病毒性心肌炎的常见病原体有( )。
A.
柯萨奇病毒
B.
埃可病毒
C.
流行性感冒病毒
D.
EB病毒
E.
风疹病毒
【多选题】常见病毒病有:( )。
A.
水稻条纹叶枯病
B.
烟草花叶病、蔬菜花叶病毒病
C.
马铃薯花叶病毒病、番茄病毒病
D.
霜霉病
【简答题】A recent study shows that half of s communicate with their parents through social media, and 16 percent of them have daily interactions, suggesting that social networking may help parents and chil...
【单选题】以下哪个选项是正确的json数据格式:
A.
{ "id": 2, "userName": admin, "passWord": 12345, "email": admin@qq.com }
B.
{ id: 2, userName: "admin", passWord: "12345", email: "admin@qq.com" }
C.
{ "id": 2, "userName": "admin", "passWord": "12345", "email": "admin@qq.com", }
D.
{ "id": 2, "userName": "admin", "passWord": "12345", "email": "admin@qq.com" }
【多选题】当新建或优化智能业务时,操作失败,网管返回:“计算路由失败”,可能的原因有().
A.
网络中无可用的资源,导致无法计算出可用路由
B.
在指定约束条件时,指定了智能业务的入光口
C.
在指定约束条件时,未按照顺序多次指定必经链路或必经节点
D.
智能业务经过的节点数超过限制
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