皮皮学,免费搜题
登录
搜题
【简答题】
将 n 只球( 1-n 号)随机地放进 n 只盒子( 1-n 号)中,一只盒子装一只球。若一只球装入与球同号的盒子中,称为一个配对。记X 为总的配对数, Y 为未配对数,求 , ,
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
【单选题】诊断胰腺癌时联合检测的组合是
A.
CA 19-9+CA125+AFP
B.
CA 125+CA50+NSE
C.
CA 50+CA125+CA19-9
D.
AFP+CA50+CA19-9
E.
NSE+CA125+AFP
查看完整题目与答案
【单选题】某人因外伤出血,血色鲜红,从伤口处随心跳一股一股地涌出,紧急抢救的方法是
A.
手指压血管
B.
止血带或绷带从远心端压迫止血
C.
止血带或绷带从近心端压迫止血
D.
消毒后,用纱布包扎
查看完整题目与答案
【简答题】Paras. 9-10: different care for ______ in women’s appearance
查看完整题目与答案
【简答题】How does the author show us the importance of deep-sea exploration in Part Three (Paras. 6-9)?
查看完整题目与答案
【简答题】the aim of ________ /Paras. 9-10
查看完整题目与答案
【简答题】Text A Paras. 9-10
查看完整题目与答案
【简答题】In terms of the way of life, what is the biggest problem with people now? (Paras. 9 -10)
查看完整题目与答案
【单选题】某人因外伤出血,血色鲜红,从伤口处随心跳一股一股地涌出,紧急抢救的方法是
A.
手指压血管
B.
止血带或绷带从远心端压迫止血
C.
止血带或绷带从近心端压迫止血
D.
消毒后,用纱布包扎
E.
用弹力绷带包扎止血
查看完整题目与答案
【简答题】Structure Main Ideas Paras. 1-2 Paras. 3-7 Paras.8-9 Paras. 10
查看完整题目与答案
【单选题】What's the main reason for the declining of happiness? (Paras. 9-10)
A.
The limited choices and the downturn of the economy.
B.
The unlimited options that people can choose from.
C.
Increasing expectations people have for material possessions.
D.
An overabundance of choice and greed on material possessions.
查看完整题目与答案
相关题目:
【单选题】诊断胰腺癌时联合检测的组合是
A.
CA 19-9+CA125+AFP
B.
CA 125+CA50+NSE
C.
CA 50+CA125+CA19-9
D.
AFP+CA50+CA19-9
E.
NSE+CA125+AFP
查看完整题目与答案
【单选题】某人因外伤出血,血色鲜红,从伤口处随心跳一股一股地涌出,紧急抢救的方法是
A.
手指压血管
B.
止血带或绷带从远心端压迫止血
C.
止血带或绷带从近心端压迫止血
D.
消毒后,用纱布包扎
查看完整题目与答案
【简答题】Paras. 9-10: different care for ______ in women’s appearance
查看完整题目与答案
【简答题】How does the author show us the importance of deep-sea exploration in Part Three (Paras. 6-9)?
查看完整题目与答案
【简答题】the aim of ________ /Paras. 9-10
查看完整题目与答案
【简答题】Text A Paras. 9-10
查看完整题目与答案
【简答题】In terms of the way of life, what is the biggest problem with people now? (Paras. 9 -10)
查看完整题目与答案
【单选题】某人因外伤出血,血色鲜红,从伤口处随心跳一股一股地涌出,紧急抢救的方法是
A.
手指压血管
B.
止血带或绷带从远心端压迫止血
C.
止血带或绷带从近心端压迫止血
D.
消毒后,用纱布包扎
E.
用弹力绷带包扎止血
查看完整题目与答案
【简答题】Structure Main Ideas Paras. 1-2 Paras. 3-7 Paras.8-9 Paras. 10
查看完整题目与答案
【单选题】What's the main reason for the declining of happiness? (Paras. 9-10)
A.
The limited choices and the downturn of the economy.
B.
The unlimited options that people can choose from.
C.
Increasing expectations people have for material possessions.
D.
An overabundance of choice and greed on material possessions.
查看完整题目与答案
参考解析:
知识点:
题目纠错 0
发布