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【单选题】
The normal to a certain 1-m2 area makes an angle of 60◦ with a uniform magnetic field. The magnetic flux through this area is the same as the flux through a second area that is perpendicular to the field if the second area is:A.
0.866m2
B.
1.15m2
C.
0.5m2
D.
2m2
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【简答题】Along the equator it reaches nearly halfway around the globe.
【单选题】口腔局部麻醉时,应注意:
A.
操作前应询问患者既往史,有高血压病史者要测量血压
B.
由医生自行装入局麻药,准备注射器
C.
当需要注射1支以上麻药时,仅需更换麻药,不需换注射针头
D.
局麻时由医生自行摘取注射针头帽
E.
术前不必核对患者姓名等信息
【简答题】在聚合酶链反应中,除了需要模板DNA外,还需加入 、 、
【单选题】It can be concluded that during an anti-El Nino the faster-moving signal waves are
A.
negative Rossby waves moving east along the equator.
B.
positive Rossby waves moving west along the equator.
C.
positive Kelvin waves moving east along the equator.
D.
positive Kelvin waves moving west along the equator.
【简答题】专业技术能力应由 _____ 、 _____ 、 _____ 三方面构成。
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