皮皮学，免费搜题
登录
logo - 刷刷题
搜题
【单选题】
甲型流感病毒易发生变异的原因是 ()
A.
RNA分节段而易于发生基因重组
B.
核蛋白理化因素影响而变异
C.
干扰素影响基质蛋白合成
D.
HA、NA和相应抗体结合导致灭活
E.
脂溶剂裂解脂质包膜发生L型变异
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案：
举一反三
【单选题】The main idea of the business school academic is appealing. In a world where companies must adapt to new technologies and source of competition, it is much harder than it used to be to offer good empl...
A.
had job security and opportunity of promotion
B.
had to compete with each other to keep his job
C.
had to undergo training all the time
D.
had no difficulty climbing the corporate ladder
查看完整题目与答案
【判断题】电气工具和用具应由专人保管，每六个月须由电气试验单位进行定期检查;使用前必须检查电线是否完好，有无接地线;坏的或绝缘不良的不准使用;使用时应按有关规定接好漏电保护器和接地线;使用中发生故障，须立即找电工修理。
A.
正确
B.
错误
查看完整题目与答案
【单选题】－Is it your boss in the office? －No, it _____ be him. He has gone to Beijing on business. [     ]
A.
mustn't
B.
shouldn't
C.
can't
D.
needn't
查看完整题目与答案
【判断题】J曲线产生效应的原因是短期内数量效应超过了价格效应，造成国际收支的恶化。
A.
正确
B.
错误
查看完整题目与答案
【简答题】使用电钻等电气工具时须（）。电气工具和用具应由专人保管，每（）个月须由电气试验单位进行定期检查。
查看完整题目与答案
【判断题】为文档的标题设置1到9级的大纲级别，可以在大纲视图中进行，数字越大级别越高。
A.
正确
B.
错误
查看完整题目与答案
【判断题】为文档的标题设置1到9级的大纲级别,可以在大纲视图中进行,数字越大级别越高
A.
正确
B.
错误
查看完整题目与答案
【判断题】J曲线效应产生的原因是短期内数量效应超过了价格效应，造成国际收支的恶化。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】What is suggested about Business World Monthly?
A.
It pays its writers on a monthly basis.
B.
It holds an annual book fair for its readers.
C.
It has published several reviews written by Mr. Johnson.
D.
Its subscribers increased from the beginning of January.
查看完整题目与答案
【单选题】电气工具和用具应由专人保管，每()个月须由电气试验单位进行定期检查
A.
3
B.
6
C.
9
D.
12
查看完整题目与答案
相关题目：
【单选题】The main idea of the business school academic is appealing. In a world where companies must adapt to new technologies and source of competition, it is much harder than it used to be to offer good empl...
A.
had job security and opportunity of promotion
B.
had to compete with each other to keep his job
C.
had to undergo training all the time
D.
had no difficulty climbing the corporate ladder
查看完整题目与答案
【判断题】电气工具和用具应由专人保管，每六个月须由电气试验单位进行定期检查;使用前必须检查电线是否完好，有无接地线;坏的或绝缘不良的不准使用;使用时应按有关规定接好漏电保护器和接地线;使用中发生故障，须立即找电工修理。
A.
正确
B.
错误
查看完整题目与答案
【单选题】－Is it your boss in the office? －No, it _____ be him. He has gone to Beijing on business. [     ]
A.
mustn't
B.
shouldn't
C.
can't
D.
needn't
查看完整题目与答案
【判断题】J曲线产生效应的原因是短期内数量效应超过了价格效应，造成国际收支的恶化。
A.
正确
B.
错误
查看完整题目与答案
【简答题】使用电钻等电气工具时须（）。电气工具和用具应由专人保管，每（）个月须由电气试验单位进行定期检查。
查看完整题目与答案
【判断题】为文档的标题设置1到9级的大纲级别，可以在大纲视图中进行，数字越大级别越高。
A.
正确
B.
错误
查看完整题目与答案
【判断题】为文档的标题设置1到9级的大纲级别,可以在大纲视图中进行,数字越大级别越高
A.
正确
B.
错误
查看完整题目与答案
【判断题】J曲线效应产生的原因是短期内数量效应超过了价格效应，造成国际收支的恶化。()
A.
正确
B.
错误
查看完整题目与答案
【单选题】What is suggested about Business World Monthly?
A.
It pays its writers on a monthly basis.
B.
It holds an annual book fair for its readers.
C.
It has published several reviews written by Mr. Johnson.
D.
Its subscribers increased from the beginning of January.
查看完整题目与答案
【单选题】电气工具和用具应由专人保管，每()个月须由电气试验单位进行定期检查
A.
3
B.
6
C.
9
D.
12
查看完整题目与答案
参考解析：
知识点：
题目纠错 0
发布
创建自己的小题库 - 刷刷题