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【判断题】
在蜗杆传动中,若要求传动效率较,蜗杆头数应取较大值。A.
正确
B.
错误
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举一反三
【单选题】We have ______ the room every day. [ ]
A.
breakf ast in
B.
the breakfast on C a breakfast in D. an breakfast on
【简答题】DNS欺骗是一种常见的网络安全事件，其原理是将DNS服务器中的IP地址和域名对应关系进行篡改，从而导致用户访问特定的网站数据包不能正常到达正确的IP地址。()
【简答题】A．Breakfast only. B．Breakfast and dinner. C．Dinner only. D．Breakfast, lunch and supper.
【多选题】What differences are there between American breakfast and Continental breakfast?
A.
The Continental breakfast is simpler than the American breakfast.
B.
The Continental breakfast usually includes tea, juice, coffee, toast and bread.
C.
The American breakfast also offers cereals and eggs cooked in different ways, in addition to the Continental breakfast.
D.
The Continental breakfast usually service with no milk, but the American breakfast does.
【单选题】A simple breakfast cannot be a healthy breakfast. 查看材料
A.
Right
B.
Wrong
C.
Not mentioned
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