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【判断题】
在维修直流电机时，对各绕组之间作耐压试验，其试验电压用直流电。A.
正确
B.
错误
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举一反三
【简答题】Just be ______( 耐心 ) a while. These things take time.
【简答题】互联网通用协议是 协议。
【单选题】Just-in-time inventory systems
A.
are used only by manufacturing firms.
B.
are implemented primarily by the manufacturing function.
C.
have components arrive at a manufacturing plant just in time to enter the production process.
D.
are valuable when there is a labor dispute with a key supplier.
E.
always keep extra inventory on hand for emergencies
【简答题】正常成年人的理想血压和血压正常高值分别为多少？
【单选题】The train arrived and they were just to catch it. [ ]
A.
on time; on time
B.
on time; in time
C.
in time; in time
D.
in time; on time
【简答题】TCP/IP是互联网协议的总称，也是互联网的核心技术，TCP代表______协议，IP代表______协议。
【单选题】血压正常高值是 A．收缩压< 120mmHg，舒张压<80mmHg B．收缩压120~130mmHg，舒张压80~ 89mmHg
A.
血压正常高值是 A．收缩压< 120mmHg，舒张压<80mmHg
B.
收缩压120~130mmHg，舒张压80~ 89mmHg
C.
收缩压160~179mmHg，舒张压100 ~109mmHg
D.
收缩压≥180mmHg，舒张压≥ll0mmHg
E.
收缩压≥200mmHg，舒张压≥120mmHg
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