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【单选题】
III类设备结构对电击的防护措施是( )。
A.
基本绝缘
B.
基本绝缘加保护接地
C.
低电压供电
D.
基本绝缘加辅助绝缘
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举一反三
【单选题】I ____ go home at once. My brother is ill.
A.
may
B.
must
C.
ought
【单选题】--My brother is ill in hospital.--I’m sorry that.
A.
hear
B.
hearing
C.
to hear
【多选题】1通过对国外旅游文化研究发展历程的梳理分析,我们大致可以总结出国外旅游研究的一些特点,主要包括( )。
A.
旅游文化研究地位越来越重要,正成为旅游研究的主导方向
B.
理论研究受到重视,实践应用效果不佳
C.
有研究亮点闪烁,但后续研究明显不足
D.
旅游文化研究多以旅游特别是旅游的社会文化影响为着眼点
E.
旅游文化研究以旅游者为中心
【简答题】One day, Isaac Newton, the great British (11) , asked h friend to have dinner with him. Dinner was ready, but Newton had not (12) his study. His friend sat down and waited for him. After waiting for q...
【简答题】分配曲线的特性参数(2)--可能偏差E 的定义和物理意义
【单选题】Better Halves Jerry and Eileen Spinelli met, quite literally, over writing. At the time, they worked for the same company but were barely acquainted. One day while waiting at a trolley stop, Eileen to...
A.
Y
B.
N
C.
NG
【单选题】—My brother is ill in hospital. —I'm sorry ___ that. [     ]
A.
hear
B.
hearing
C.
heard
D.
to hear
【单选题】旅游文化研究的方向不包括:()
A.
旅游的资源文化
B.
旅游的大众文化
C.
旅游的学术文化
D.
旅游的武侠文化
【单选题】My brother is ill ,( )I have to stay at home.
A.
so
B.
till
C.
or
D.
but
【单选题】-- My brother is ill in hospital. -- I am sorry _________that. [     ]
A.
hear
B.
hearing
C.
to hear
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