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【简答题】
Paul wants to buy some blank discs. Listen to his conversation with the sales assistant, and decide whether these sentences are true or f alse . Then fill the blanks with your answer (T or F) 1. A DVD is an optical digital disc that can be used for video , audio and data storage. ( ) 2. The dimensions (尺寸) of a CD and a DVD are the same: 1.3 mm thick and 13 cm in diameter (直径). ( ) 3. The data on a DVD is read with a laser beam. ( ) 4. A basic DVD can hold 3.7 gigabytes. ( ) 5. You need a hard drive to read DVDs. ( ) 6. DVD-Video discs can hold full-length movies. ( ) 7. A DVD Writer is not compatible with old CD-ROMs. ( )
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【简答题】NaOH的摩尔质量是 g/mol,0.5molNaOH的质量是 g。
【判断题】_______ If we have a fever, cough, and difficulty breathing, we should seek medical care early without sharing our previous travel history with our healthcare provider.
A.
正确
B.
错误
【多选题】审故发生后,要以事实为依据,以有关法规、规章为准绳,按照( )的原则处理事 故,查明原因,分清责任,吸取教训,制订措施,防止同类事故再次发生。
A.
事故原因没有查清不放过
B.
事故责任者没有严肃处理不放过
C.
广大职工没有受到教育不放过
D.
防范措施没有落实不放过
【单选题】Without sharing( ), we would all have a difficult time speaking the same language or interpreting the same event.
A.
Same symbols
B.
Same meanings
C.
Same lables
D.
Same cultural environment
【单选题】Not only Tom but also his wife ____fond of watching television.
A.
are
B.
were
C.
be
D.
is
【多选题】事故发生后,要以事实为依据,以有关法规、规章为准绳,按照( )的原则处理事故,查明原因,分清责任,吸取教训,制订措施,防止同类事事故原因没有查清不放过故再次发生。
A.
事故原因没有查清不放过
B.
事故责任者没有严肃处理不放过
C.
广大职工没有受到教育不放过
D.
防范措施没有落实不放过
【多选题】事故发生后,要以事实为依据,以有关法规、规章为准绳,按照 “四不放过”的原则处理事故,四不放过指( )
A.
事故原因未查清不放过
B.
事故责任人未受到处理不放过
C.
当事人和群众没有受到教育不放过
D.
没有进行事故汇报不放过
【多选题】事故发生后，要以事实为依据，以有关法规、规章为准绳，按照（ABCD ）的原则处理事故，查明原因，分清责任，吸取教训，制订措施，防止同类事事故原因没有查清不放过故再次发生。
A.
事故原因没有查清不放过
B.
事故责任者没有严肃处理不放过
C.
广大职工没有受到教育不放过
D.
防范措施没有落实不放过
【判断题】Free
riders' is a term associated with the people who would like to have benefit of
a good without sharing the cost of its supply. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespac...
A.
正确
B.
错误
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