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【单选题】
下列关于DNS域名服务协议的说法中,正确的是( )。A.
提供从IP地址到物理地址的转换
B.
提供从物理地址到域名的转换
C.
提供从域名到物理地址的转换
D.
提供从域名到IP地址的转换
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反馈参考答案：
举一反三
【简答题】The best title for this passage would be ________. A) Don’t Be a Perfectionist B) Importance of Adjustments C) Details and Major Objectives D) Hard Work Plus Good Luck
【单选题】从总体均值、方差为已知的任一有限总体中随机抽取样本含量大小为n的样本，下列正确的是
A.
当n足够大时，样本均值量的分布近似服从正态分布
B.
只有当n<30时，样本均值的分布近似服从正态分布
C.
样本均值的分布与n无关
D.
无论n多大，样本均值的分布都为非正态分布
E.
样本均值的分布形态取决于总体分布的形态
【单选题】听力原文：W: Isn't this the best team in England? M: Yes, of course. But they aren't playing very well today. What do we learn about the dialogue?
A.
The best team in England play very well every time.
B.
This isn't the best team in England.
C.
Today the best team in England are not playing as well as before.
【单选题】Which of these statements is best supported from the passage in Paragraph 5?
A.
It is best to start writing when you are young.
B.
Earning a living from writing requires painstaking effort.
C.
The decision to become a writer was carefully considered.
D.
The decision to become a writer was not carefully considered.
【简答题】什么是土的可松性?可松性系数分为哪些?这些系数的涵义是什么?
【单选题】患者男,46岁。因急性心包炎入院。心脏超声心动图示大量心包积液。行心包穿刺术时,患者出现面色苍白、脉搏增快、血压下降。心电监测示频发性室性期前收缩,应立即采取的处理措施为
A.
夹闭胶管
B.
安慰患者
C.
立即通知医生
D.
准备抢救药物
E.
减慢抽液速度
【单选题】I don’t think he is the best man to do the job.
A.
I don’t think.
B.
He is the best .
【简答题】润滑系的基本组成有哪些？各有何功用？
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