第一章 单元测试

1、单选题：
下列哪项不是小儿上呼吸道的解剖特点（ ）
选项：
A:鼻腔短，无鼻毛，后鼻道狭窄
B:咽鼓管呈宽、直、短、平的特点
C:咽扁桃体发育的高峰是1~3岁
D:鼻腔粘膜与鼻窦粘膜连续，且鼻窦开口相对较大
E:喉部呈漏斗状，喉腔狭窄
答案: 【咽扁桃体发育的高峰是1~3岁】点我阅读全文

第一章 单元测试

1、单选题：
A charge +Q is fixed in position as a small charge +q is brought near it and released from rest. Which best describes the magnitude of the velocity of the charge +q as r, the distance between the charges increases? ( )
选项：
A:The magnitude of the velocity will remain constant.
B:The magnitude of the velocity will increase, and its rate of increase will also increase.
C:The magnitude of the velocity will decrease, and its rate of decrease will also decrease.
D:The magnitude of velocity will increase, but its rate of decrease will increase.
E:The magnitude of the velocity will increase, but its rate of increase will decrease.
答案: 【The magnitude of the velocity will increase, but its rate of increase will decrease.】点我阅读全文

绪论 单元测试

1、单选题：
Penny Bauer, Chief Financial Officer of Harrison Haulage, suspects irregularities in the payroll system, and orders an inspection of ‘each and every payroll voucher issued since 1 January 2005’. Five per cent of the payroll vouchers contained material errors. This is an example of ________________.
选项：
A:descriptive statistics
B:nominal data
C:nonparametric statistics
D:inferential statistics
答案: 【descriptive statistics】点我阅读全文

第一章 单元测试

1、单选题：
1､将5.0 L压力为的和15.0 L压力为的同时混合在20 L的密闭容器中,在温度不变的条件下,混合气体的总压力为 ( )
选项：
A:

B:

C:

D:

答案: 【
】点我阅读全文

绪论 单元测试

1、单选题：
下列不属于1973年以来发现的新病原的是
选项：
A:埃博拉病毒
B:朊粒
C:幽门螺杆菌
D:轮状病毒
E:结核杆菌
答案: 【结核杆菌】点我阅读全文

第一章 单元测试

1、单选题：
夏朝解释罪与刑的基本依据是
选项：
A:奉“天”罚罪的法制观
B:“亲亲”、“尊尊”
C:“明德慎罚”
D:“行刑，重其轻者”
答案: 【奉“天”罚罪的法制观】点我阅读全文

第一章 单元测试

1、判断题：
资源的稀缺性是指经济资源。
选项：
A:错
B:对
答案: 【对】点我阅读全文