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【单选题】
关于设非对称卸荷槽的齿轮泵,下列说法中不正确的是( )A.
能使噪音更低
B.
不允许反转
C.
可只设在吸油侧
D.
卸荷槽向吸入侧偏移
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】我国的邻国共有几个?
【单选题】When transferring solution with a pipet, the correct operation to release solution is
A.
The pipet is inserted into the receiving container and removed as soon as the solution flows out naturally
B.
The pipet is vertical and the pipet tip is against the inner wall of the receiving container. After the solution flows out naturally, stop at least 30s and then move away.
C.
The pipet is vertical and the pipet tip is against the inner wall of the receiving container. After the solution flows out naturally, stop at least 5s and then move away
D.
The pipet is vertical, the solution flows out naturally and then stops for 15s, then moves away
【简答题】输液(infusion solution)