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新安装的车床主轴顶和尾坐顶高度,只允许尾坐()。

A. 比主轴高
B. 比主轴低
C. 与主轴同高
D. 以上都不对

微弱的侧风对于起飞飞机产生的翼尖涡流有何影响?

How many subnetworks and hosts are available per subnet if you apply a /28 mask to the 210.10.2.0 class C network?()

A. 30 networks and 6 hosts.
B. 6 networks and 30 hosts.
C. 8 networks and 32 hosts.
D. 32 networks and 18 hosts.
E. 14 networks and 14 hosts.
F. None of the above

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