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搜题
【单选题】
甲氧苄啶的作用机制()A.
抑制二氢叶酸还原酶
B.
抑制二氢叶酸合成酶
C.
抑制四氢叶酸还原酶
D.
抑制四氢叶酸合成酶
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The scavenging box is built of a number of sections provided with vertical flanges enabling them _____ together to form. two blocks.
A.
being bolted
B.
bolted
C.
bolting
D.
to be bolted
【单选题】How is sealing between the liner and the top of the scavenging air box achieved?
A.
It is achieved by washers.
B.
It is achieved by stuffing box.
C.
It is achieved by the rubber rings fitted into the slots machine-turnecl in the liners.
D.
It is achieved by sealing rings fitted into the slots in the scavenging air box.
【单选题】How is sealing between the liner and the top of the scavenging air box achieved?
A.
It is achieved by washers.
B.
It is achieved by stuffing box.
C.
It is achieved by the rubber ring fitted into the slots in the machine-turned in the liners.
D.
It is achieved by sealing ring fitted into the slots in the scavenging air box.
【简答题】试述机床功率不足现象出现的原因及其解决方法。
【单选题】下列哪项不是存储区域网络的特性?
A.
SAN允许同时访问磁盘或磁带阵列，改进了系统性能;
B.
SAN提供了可靠的灾难恢复解决方案;
C.
SAN是可扩展的;
D.
SAN最大限度地降低了系统和数据的可用性。
【单选题】How is sealing between the liner and the top of the scavenging air box achieved?
A.
It is achieved by washers.
B.
It is achieved by stuffing box.
C.
It is achieved by the rubber rings fitted into the slots machine-turned in the liners
D.
It is achieved by sealing rings fitted into the slots in the scavenging air box. 通过
【简答题】在极限与配合国家标准中,孔和轴的公差带大小由 决定,公差带位置由 决定。
【单选题】How is sealing between the liner and the top of the scavenging air box achieved? .
A.
It is achieved by washers.
B.
It is achieved by stuffing box.
C.
It is achieved by the rubber rings fitted into the slots machine-turned in the liners
D.
It is achieved by sealing rings fitted into the slots in the scavenging air box.
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