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【单选题】
关于噪声说法正确的是A.
噪声的危害程度只与频率的高低有关
B.
噪声的耐受程度大多数人是一致的
C.
长时间处于90dB以上环境中可造成永久性失聪
D.
噪声的耐受程度与过去生活的环境和经历有关
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反馈参考答案：
举一反三
【单选题】In a physical change no new substance is formed，__________ in the composition of matter.
A.
nor does any change take place
B.
nor any change takes place
C.
not any change takes place
D.
either any change takes place
【单选题】—When will you come to see me, Dad? —I will go to see you when you __________ the training course.
A.
finish
B.
are finished
C.
will finish
D.
are finishing
【单选题】— When will you come to see me, Dad? — I will go to see you when you _____ the training course. [ ]
A.
finished
B.
finish
C.
are finishing
D.
will finish
【单选题】— When will you come to see me, Mum? — I will go to see you when you _____ the training course.
A.
will have finished
B.
will finish
C.
are finishing
D.
finish
【单选题】If the peripheral resistance does not change and the stroke volume increases, the change in arterial blood pressure is
A.
Increased systolic blood pressure and decreased diastolic blood pressure
B.
The systolic blood pressure does not change and the diastolic blood pressure rises
C.
Increased systolic blood pressure, unchanged diastolic blood pressure
D.
Increased systolic blood pressure is more pronounced than increased diastolic blood pressure
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