搜题请搜索小程序“爱下问搜题”
问题 单项选择题

用一个尽量小的自然数乘以1999，使其乘积的尾数出现六个连续的9。求这个乘积。

A．5999999
B．4999999
C．3999999
D．2999999

答案

参考答案：C

解析： 代入法解题，只有3999999可以被1999整除，故应选择C。

填空题

800平方分米=______平方米　　　　　　　　　　6平方千米=______公顷．
查看答案
单项选择题

A pregnant client with premature rupture of the membranes has had contractions every 10 minutes. After 48 hours, the contractions stop and the client is to be discharged with home monitoring. The nurse discusses with the client about preterm labor symptoms. Which of the following statements made by the client indicates that she needs further instruction()

A. "I should report contractions that occur every 10 minutes in 1 hour. "

B. "I should lie in bed on my left side if contractions begin. "

C. "I should call the doctor if my contractions occur every hour for 6 hours. "

D. "If I start having contractions, I should empty my bladder. \
查看答案