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【单选题】
根据我国现行专利法的规定,申请人自发明或者实用新型在外国第一次提出专利申请之日起()内,或者自外观设计在外国第一次提出专利申请之日起()内,又在中国就相同主题提出专利申请的,依照该外国同中国签订的协议或者共同参加的国际条约,或者依照相互承认优先权的原则,可以享有优先权。
A.
六个月,六个月
B.
六个月,十二个月
C.
十二个月,六个月
D.
十二个月,十二个月
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举一反三
【单选题】The viruses can cause all the following damages EXCEPT ______.
A.
low speed of the computer's functions
B.
ruin of the normal programs
C.
lack of information storage
D.
loss of all the information stored in the computers
【单选题】The most common source of excitation for synchronous motors is a/an _____.
A.
low voltage battery
B.
motor attenuator set
C.
DC exciter generator
D.
AC supply
【单选题】The expression 'warp speed' in the first paragraph is closest in meaning to ______.
A.
low speed
B.
too much time alone
C.
high speed
D.
steady speed
【单选题】According to the passage, the tram way and multistory parking lots are ______.
A.
low in cost
B.
cheap to use
C.
dismissed by critics
D.
ineffective
【单选题】队列研究最大的优点是
A.
对较多的人进行较长时间的随访
B.
发生偏倚的机会少
C.
较直接地验证病因与疾病的因果关系
D.
控制混杂因子的作用易实现
E.
研究的结果常能代表全人群
【单选题】Which of the following is NOT the result of laboratory experiments?
A.
Low concentrations
B.
Fall in lung function
C.
Irritability of the lungs
D.
Airway inflammation
【单选题】The root "carbo" means
A.
B.
C.
D.
【单选题】A smoking exhaust from an operating diesel engine could be caused by( ).
A.
low sulfur content in the fuel
B.
a loose injector inlet connection
C.
late fuel injection
D.
high injection pressure
【单选题】队列研究最大的优点是
A.
对较多的人进行较长期的随访
B.
发生偏倚的机会少
C.
较直接地验证病因与疾病的因果关系
D.
较易控制混杂因子
E.
研究的结果常能代表全人群
【单选题】Overspeed of the diesel engine driving an electric generator could cause ______.
A.
low voltage trip
B.
reverse power trip
C.
damage to windings
D.
excessive exhaust temperatures
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