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【单选题】
酶的活性中心是指酶分子A.
结合底物并催化底物转变为产物的部位
B.
结构中心部位的几个必需基团
C.
维持酶的重要部位
D.
与调节剂结合的部位
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【单选题】Task 3 Car servicing is something that every car owner has to experience at least sometime of the year. The best method to service your car is to go to your car service station and have the servicing ...
A.
To service your car by yourself.
B.
To have your car serviced at the service station.
C.
To turn to other car owners for help.
D.
To send your car back to the car maker.
【单选题】进行n次独立试验，每次试验的成功率为p(0p1)，令X为n次独立试验成功的次数，则P{X=0}=()
A.
p^n
B.
(1-p)^n
C.
1-(1-p)^n
D.
1-p^n
【简答题】代词 1. ---Is that your car? --- No, ________( 我的 ) is parked over the road. 2. The doctor told _______( 他 ) to have two days’ rest. 3. When our washing machine broke, our neighbours let ______( 我们 ) us...
【简答题】Passage 1 Car servicing is something that every car owner has to experience at least some time of the year. The best method to service your car is to go to your car service station and have the servic...
【单选题】某随机试验每次试验的成功率为p(0＜p＜1)，则在3次重复试验中至少失败1次的概率为( )
A.
(1-p) 3
B.
1-p 3
C.
3(1-p)
D.
(1-p) 3 +p(1-p) 2 +p 2 (1-p)
【单选题】Task 1 Read the following passage and answer the questions. Car servicing is something that every car owner has to experience at least some time of the year. The best method to service your car is to ...
A.
To service your car by yourself.
B.
To turn to other ear owners for help.
C.
To send your ear back to the car maker.
D.
To have your car serviced at the service station.
【单选题】Task 13 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> Car servicing is something that every car owner has to experience at least sometime of the year. The best method to serv...
A.
To service your car by yourself.
B.
To have your car serviced at the service station.
C.
To turn to other car owners for help.
D.
To send your car back to the car maker.
【简答题】每次试验的成功率为p(0＜p＜1)，重复进行10次试验，其中前7次都未成功，后3次都成功的概率为____________ .
【单选题】每次试验的成功率为p(0A.(1－p)2B.1－p2C.3(1－p)D.1－p3
A.
每次试验的成功率为p(0＜ｐ＜１） A.(1-p) 2
B.
1-p 2
C.
3(1-p)
D.
1-p 3
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