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【单选题】
Since Dick was busy, he rarely had time to go to the cinema ______.A.
Jane did too
B.
Jane didn't as well
C.
so did Jane
D.
nor did Jane
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【单选题】_____ about the safety of her son, John's mother looked upset. [ ]
A.
Concerning
B.
Concerned
C.
To concern
D.
Concern
【多选题】The major safety concerns with ALife & synthetic biology are:
A.
biosafety & biorisk: horizontal gene transfer, the formation of antibiotic-resistant superbugs, etc.
B.
bioterrorism (e.g. design & use of new biological weapons)
C.
biosecurity: synthesis of dangerous bacteria or viruses, e.g. poliovirus genome synthesized in 2002, the Spanish influenza virus genome synthesized in 2005, the SARS virus genome synthesized in 2008, the Ebola virus genome synthesized in 2016, & the horsepox virus genome synthesized in 2017
D.
environmental risk & impact: intentional or unintentional release of synthetic organisms into the environment
【单选题】The major difference between modern private and public libraries lies in
A.
readership.
B.
content.
C.
service.
D.
function.
【判断题】In the statement, "Volvo develops its cars for buyers to whom safety is a major concern, positioning the vehicles as the safest a customer can buy," buyers to whom safety is a major concern is the tar...
A.
正确
B.
错误
【单选题】选用低压断路器时,应考虑断路器的额定通断能力大于或等于被保护线路中可能出现的( )
A.
最大电流有效值
B.
最高电压有效值
C.
最大短路电流有效值
D.
额定电压有效值
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