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【单选题】

What are ‘inconvenient feedbacks’?(Please select one answer)

A.
The decline in natural resources due to habitat degradation. For example, fish population decline due to overfishing
B.
The unpredictability of the global financial system, and its impact on individual nations
C.
When global drivers trigger an unexpected that translates into an unexpected outcome
D.
When you are using Skype to communicate internationally, but the call delays your voice and feeds it back to you
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【单选题】Why is the Holocene considered to be a desirable state for humanity?(Please select one answer)

A.
Because the Holocene is a short stable period between two ice ages
B.
Because the Holocene is a state with no volcanic activity and without tectonic plates
C.
Because the Holocene is the only period known to science that is able to support human civilization as we know it

【单选题】What is Earth resilience?(Please select one answer)

A.
The ability of the earth system to withstand disturbances without shifting into a new state characterized by different structures, feedbacks and functions
B.
The ability of the earth to always bounce back from disturbances no matter how severe to its one and only ‘natural’ state
C.
The ability of the earth’s rainforests to withstand increasing temperatures and drought events

【单选题】MR内耳薄层扫描一般采用的序列是()

A.
FSE-T1WI
B.
薄层FSE-T2WI
C.
FSE-T2WI
D.
3D-FIESTA
E.
3D-TOF-MRA

【单选题】下列关于颈部3D-TOF-MRA技术的叙述,错误的是()

A.
体位摆放注意下颌紧收,不能仰起
B.
以下颌下缘作为成像中心
C.
扫描块下缘包括主动脉上缘
D.
相位编码方向为前后方向
E.
在扫描层面上方设置预饱和带