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搜题
【单选题】
流感病毒最易变异的结构是A.
核蛋白
B.
M蛋白
C.
甲型流感病毒的HA
D.
乙型流感病毒的HA
E.
RNA多聚酶
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举一反三
【单选题】Which of the following does the author mention as crucial evidence concerning the manner in which the Byzantine revival began?
A.
The Byzantine military revival of the 860' s led to economic and cultural advances,
B.
The Byzantine cultural revival lasted until 1453.
C.
The Byzantine economic recovery began in the 900' s.
D.
The revival of Byzantine learning began toward the end of the eighty century.
【多选题】Which of the following does the professor mention as the benefits of the study of fossils?[Clink on 2 answers. ]
A.
It provides information on how dinosaurs become extinct.
B.
It helps petroleum engineers with the finding of oil.
C.
It helps petroleum engineers to purify oil.
D.
It gives clues to how life originated and evolved.
【单选题】Which of the following does the author mention as a possible disadvantage of telecommuting ? 查看材料
A.
Small children cannot understand the boundaries of work and play.
B.
Computer technology is never advanced enough to accommodate the needs of every situation.
C.
Electrical malfunctions can destroy a project.
D.
The worker often does not have all the needed resources at home.
【单选题】Which of the following doesn't the woman mention as the way to get information?
A.
Television.
B.
Radio.
C.
Internet.
D.
All sorts of magazines.
【单选题】下列说法正确的是( )。
A.
干式气缸套外壁直接与冷却水接触
B.
干式气缸套壁厚度比湿式气缸套大
C.
干式气缸套安装后比湿式气缸套强度和刚度好
D.
干式气缸套比湿式气缸套冷却效果好
【单选题】How long does it take the man for preparing a film?
A.
At least 13 months.
B.
At least 3 years.
C.
At least 30 years.
D.
At least 3 months.
【单选题】Which of the following does the author mention as a possible disadvantage of telecommuting?
A.
Small children cannot understand the boundaries of work and play.
B.
Computer technology is never advanced enough to accommodate the needs of every situation.
C.
Electrical malfunctions can destroy a project.
D.
The worker often does not have all the needed resources at home.
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