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【单选题】
一个电子排布为1s 2 2s 2 2p 6 3s 2 3p 6 3d 2 4s 2 的元素其最可能的价态是( )。A.
+1
B.
+2
C.
+4
D.
+7
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反馈参考答案：
举一反三
【简答题】某场效晶体管的 U GS ( th ) = 3V 。 什么情况下该管导通?
【单选题】FedEx is a trusted global logistics company that offers_______ chain solutions.
A.
full-supply
B.
domestic
C.
soft drink
D.
terminal
【简答题】One of the challenges of global logistics is fluctuations in _____________ 。
【单选题】The main disadvantage is（）in global logistics.
A.
unqualified products
B.
Different languages
C.
Transportation delayed
D.
Unreliable delivery of goods
【单选题】已知某MOS场效晶体管产生漏极电流的条件是U DS ＞0，U GS ＞U GS(th) ＞0。该场效晶体管为( )。
A.
E型NMOS管
B.
E型PMOS管
C.
D型NMOS管
D.
D型PMOS管
【简答题】Global logistics is defined as “physical moving of material and products across nations to overcome the barries in space and time between producers and consumers ___________________”。
【简答题】Logistics is a unique global"pipelinethat operates 24 hours a day, seven days a week and 52 weeks a year, 1 and coordinating the transport and delivery of products and service to customers all over th...
【简答题】Material flow in global logistics is very similar to that in domestic logistics except for the fact that some of the vendors, warehouse and plants are __________ 。
【简答题】Logistics is a unique global "pipeline" that operates 24 hours a day, seven days a week and 52 weeks a year, 1 and coordinating the transport and delivery of products and service to customers the worl...
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