皮皮学,免费搜题
登录
logo - 刷刷题
搜题
【单选题】
子宫下段临产时可达
A.
2-3cm
B.
3-5cm
C.
5-7cm
D.
7-10cm
E.
12-15cm
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【简答题】An outstanding example of hardwired capabilities with great flexibility for programming by us is language. Specialists agree that 'the human brain genetically programmed for language 【1】______ develop...
【单选题】When new firms choose to enter monopolistically competitive markets:
A.
there must be little diversity of products in the market.
B.
they are guaranteed economic profits upon entry.
C.
some firms in the market must be making economic profits.
D.
the demand curve faced by an established firm will shift to the right as a result.
【单选题】When new firms enter a monopolistically competitive industry:
A.
the average total cost curves of established firms will shift downward.
B.
the demand curve of an established firm is reduced at each level of output.
C.
the established firms will each increase production.
D.
the average revenue received by an established firm will increase at each level of output.
【单选题】关于发动机机油消耗超标的原因,下列说法不正确的是()
A.
活塞、活塞环与缸壁磨损严重,造成配合间隙过大所致
B.
气门油封损坏所致
C.
活塞环与活塞环槽磨损严重,导致窜机油
D.
燃油压力过高所致
【单选题】关于机油消耗过大的说法不正确的是( )。
A.
对发动机排放没有影响
B.
冷车不宜启动发动机
C.
发动机积炭严重
D.
排气管冒蓝烟
【单选题】I类砂宜用于强度等级大于( )的水泥混凝土。
A.
C30
B.
C60
C.
C40
D.
C50
【单选题】When new firms have an incentive to enter a competitive market, their entry will
A.
increase the price of the product.
B.
drive down profits of existing firms in the market.
C.
shift the market supply curve to the left.
D.
increase demand for the product.
【单选题】Which of the following does not happen when new firms enter a monopolistically competitive industry?
A.
The demand curve for each of the existing firms will fall.
B.
The demand curve for each of the existing firms will move inward.
C.
The demand curve for each of the existing firms will becomes relatively more elastic.
D.
The demand curve for each of the existing firms will shift to the right.
【单选题】When new firms enter a perfectly competitive market,
A.
profits of existing firms will fall.
B.
entering firms will earn zero profit as soon as they enter.
C.
existing firms will see their costs rise.
D.
consumers will likely observe increasing prices.
【单选题】关于发动机机油消耗超标的原因,下列说法不正确的是()。
A.
活塞、活塞环与缸壁磨损严重,造成配合间隙过大所致
B.
气门油封损坏所致
C.
活塞环与活塞环枻磨损严重,导致窜机油
D.
燃油压力过高所致
相关题目:
参考解析:
知识点:
题目纠错 0
发布
创建自己的小题库 - 刷刷题