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【判断题】
若[A,B]=0,A、B均为算符,则A的本征函数必定也是B的本征函数。A.
正确
B.
错误
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举一反三
【单选题】某企业于20×3年1月1日从租赁公司租入一套设备,价值50万元,租期8年,租赁期满时预计残值6万元,归承租人所有。年利率6%,租赁手续费率1%。租金每年末支付一次,则每年的租金为( )元。已知:(P/A,7%,8)=5.9713。
A.
80517.89
B.
77361.06
C.
83733.86
D.
89244.76
【多选题】某企业于20×9年12月31日从租赁公司租入一套设备，租期为10年，预计租赁期满时的残值为3万元，归承租企业，租金按等额年金支付，每年初支付4万元，资本成本率为10%，市场无风险利率为8% 。下面计算设备现值的方式正确的有（）。
A.
4 × PVIFA10%,10 即 4×（P/A, 10%，10）
B.
4 × PVIFA8%,10 即 4×（P/A, 8%，10）
C.
4 ×（ PVIFA10%,9+1 ） 即 4×[（P/A, 10%，9）+1]
D.
4 ×（ PVIFA8%,9+1 ） 即 4×[（P/A, 8%，9）+1]
E.
4 × PVIFA10%,10 ×（ 1+10% ） 即 4×（P/A, 10%，10）(1+10%)
【简答题】When language is used to reveal the speaker’s a____ and feelings, such as “It’s very kind of you!”, it performs the e____ function.
【多选题】The OSPF Hello protocol performs which of the following tasks (Choose two.)（）。
A.
It provides dynamic neighbor discovery.
B.
It detects unreachable neighbors in 90 second intervals.
C.
It maintains neighbor relationships.
D.
It negotiates correctness parameters between neighboring interfaces.
E.
Ituses timers to elect the router with the fastest links as the designated router.
F.
It broadcasts hello packets throughout the internetwork to discover all routers that are running OSPF.
【单选题】Conducting portion performs all of the following functions EXCEPT:
A.
conduct air
B.
exchange gases
C.
moisten ai r
D.
trap foreign particles
E.
warm air
【单选题】以下关于二甲双胍的说法错误的是
A.
作用时间短，原形经肾脏排泄
B.
二甲双胍可以增加非胰岛素依赖的组织对葡萄糖的利用
C.
二甲双胍禁用于代谢性酸中毒患者
D.
二甲双胍可以减弱华法林抗凝作用
【多选题】The OSPF hello protocol performs which of the following tasks?（）
A.
It provides dynamic neighbor discovery
B.
It detects unreachable neighbors in 90 second intervals
C.
It maintains neighbor relationships
D.
It negotiates correctness parameters between neighboring interfaces
E.
It uses timers to elect the router witch the fastest links as the designated router
F.
It broadcasts hello packets throughout the internetwork to discover all routers that are running OSPF
【多选题】THE APPLICATION LAYER OF THE TCP/IP MODEL PERFORMS THE FUNCTIONS OF WHAT THREE LAYERS OF THE OSI MODEL? (CHOOSE THREE.)
A.
application
B.
transport
C.
network
D.
data link
E.
physical
F.
session
G.
presentation
【单选题】The last paragraph performs which of the following functions in the passage?
A.
It summarizes the discussion thus far and suggests additional areas of research.
B.
It presents a recommendation based on the evidence presented earlier.
C.
It discusses an exceptional case in which the results expected by the author of the passage were not obtained.
D.
It introduces an additional area of concern not mentioned earlier.
E.
It cites a specific case that illustrates a problem presented more generally in the previous paragraph.
【单选题】Despite certain ______ habits of the North American screech owl, it performs the majority of its hunting alone, in alpine forests, unfettered by ______ .
A.
predatory... ecology
B.
instinctual ... behavior
C.
exogamous... kinship
D.
omnivorous... diet
E.
diurnal... darkness
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