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【简答题】
(本题满分12分)本题共有2个小题，第1小题满分5分，第2小题满分7分． 要测定古物的年代，常用碳的放射性同位素 的衰减来测定：在动植物的体内都含有微量的 ，动植物死亡后，停止了新陈代谢， 不再产生，且原有的 含量的衰变经过5570年( 的半衰期)，它的残余量只有原始量的一半．若 的原始含量为 ，则经过 年后的残余量 与 之间满足 ． (1) 求实数 的值； (2) 测得湖南长沙马王堆汉墓女尸中 的残余量约占原始含量的76.7%，试推算马王堆古墓的年代(精确到100年)．
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参考答案：
举一反三
【多选题】发动机润滑的方式有
A.
定期润滑
B.
固定润滑
C.
飞溅润滑
D.
压力润滑
查看完整题目与答案
【单选题】将CCD灰度数据处理为纯黑白的方法叫做
A.
硬件积分
B.
最小二乘法
C.
卡尔曼滤波
D.
二值化
查看完整题目与答案
【单选题】- You can use MSN to talk with your friend on the Internet. -I know.  But can you tell me_______?
A.
what I can use it
B.
how can I use it
C.
why can I use it
D.
when I can use it
查看完整题目与答案
【单选题】Can you summarize the features(特征) of smart cars listed in TextA?
A.
Smart cars can eliminate most car accidents. Smart cars can alert the police and provide precise location if stolen. Smart cars can monitor one’s driving and the driving conditions nearby. Smart cars can alert the drowsy driver. Smart cars can locate your car precisely and warn of traffic jams.
B.
Smart cars can eliminate most car accidents. Smart cars can alert the police and provide precise location if stolen. Smart cars can monitor one’s driving and the driving conditions nearby. Smart cars can alert the sleepy driver.
C.
Smart cars can reduce the rate of car accidents. Smart cars can alert the police and provide precise location if broken. Smart cars can monitor one’s driving and the driving conditions nearby. Smart cars can alert the sleepy driver. Smart cars can locate your car precisely and warn of traffic jams.
D.
Smart cars can get rid of most car accidents. Smart cars can alert the police and provide precise location if stolen. Smart cars can monitor one’s driving and the driving conditions nearby to warn of traffic jams. Smart cars can alert the sleepy driver.
查看完整题目与答案
【单选题】正常人循环血液中嗜酸性粒细胞占白细胞的比例为:( )
A.
0.005~0.05
B.
0.05~0.5
C.
0.5~5.0
D.
0.005~0.5
E.
0.05~5.0
查看完整题目与答案
【单选题】—You can use MSN to talk with Vivien on the Internet. —I know. But can you tell me _______? [     ]
A.
when I can use it
B.
what I can use it
C.
why can I use it
D.
how can I use it d
查看完整题目与答案
【简答题】发动机润滑的方式有哪几种?
查看完整题目与答案
【单选题】______ you think you can or not, you must finish the project before Friday.
A.
If
B.
Unless
C.
Though
D.
Whether
查看完整题目与答案
【单选题】You can meet people()can possibly help you find a paid job later on.
A.
that
B.
who
C.
which
查看完整题目与答案
【多选题】Can you summarize the introduction of Laundry service?
A.
collecting  clothes
B.
special instruction
C.
delivering clothes
D.
washing patterns
查看完整题目与答案
相关题目：
【多选题】发动机润滑的方式有
A.
定期润滑
B.
固定润滑
C.
飞溅润滑
D.
压力润滑
查看完整题目与答案
【单选题】将CCD灰度数据处理为纯黑白的方法叫做
A.
硬件积分
B.
最小二乘法
C.
卡尔曼滤波
D.
二值化
查看完整题目与答案
【单选题】- You can use MSN to talk with your friend on the Internet. -I know.  But can you tell me_______?
A.
what I can use it
B.
how can I use it
C.
why can I use it
D.
when I can use it
查看完整题目与答案
【单选题】Can you summarize the features(特征) of smart cars listed in TextA?
A.
Smart cars can eliminate most car accidents. Smart cars can alert the police and provide precise location if stolen. Smart cars can monitor one’s driving and the driving conditions nearby. Smart cars can alert the drowsy driver. Smart cars can locate your car precisely and warn of traffic jams.
B.
Smart cars can eliminate most car accidents. Smart cars can alert the police and provide precise location if stolen. Smart cars can monitor one’s driving and the driving conditions nearby. Smart cars can alert the sleepy driver.
C.
Smart cars can reduce the rate of car accidents. Smart cars can alert the police and provide precise location if broken. Smart cars can monitor one’s driving and the driving conditions nearby. Smart cars can alert the sleepy driver. Smart cars can locate your car precisely and warn of traffic jams.
D.
Smart cars can get rid of most car accidents. Smart cars can alert the police and provide precise location if stolen. Smart cars can monitor one’s driving and the driving conditions nearby to warn of traffic jams. Smart cars can alert the sleepy driver.
查看完整题目与答案
【单选题】正常人循环血液中嗜酸性粒细胞占白细胞的比例为:( )
A.
0.005~0.05
B.
0.05~0.5
C.
0.5~5.0
D.
0.005~0.5
E.
0.05~5.0
查看完整题目与答案
【单选题】—You can use MSN to talk with Vivien on the Internet. —I know. But can you tell me _______? [     ]
A.
when I can use it
B.
what I can use it
C.
why can I use it
D.
how can I use it d
查看完整题目与答案
【简答题】发动机润滑的方式有哪几种?
查看完整题目与答案
【单选题】______ you think you can or not, you must finish the project before Friday.
A.
If
B.
Unless
C.
Though
D.
Whether
查看完整题目与答案
【单选题】You can meet people()can possibly help you find a paid job later on.
A.
that
B.
who
C.
which
查看完整题目与答案
【多选题】Can you summarize the introduction of Laundry service?
A.
collecting  clothes
B.
special instruction
C.
delivering clothes
D.
washing patterns
查看完整题目与答案
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