下列叙述逐日平均水位表中水位保证率错误的是()。
A、以水文年为统计时段
B、以日平均水位作确定值
C、日内瞬时水位高于等于某一水位值的天数
D、某站1999年保证率为90d的水位为1236.50m,就是指该年中有275d的日平均水位小于1236.50m。
要到微信小程序或APP查看答案哦。
实在点不开答案,可以分享到微信,
在微信里面查看答案。
APP具体操作流程为:
阅读下面短文,根据所给中文正确拼写单词,每空一词。
Henry was a great writer in the 1 (十九) century. When he was young, he lived a 2 (艰苦的)
life. He loved reading and writing very much. But his parents thought it wasn't helpful. He 3 (回复) them that he didn't give up 4 (尝试). At 24, he wrote the first book 5 (关于) a lovely and young boy.
And the boy's ideas were quite different from 6 (我们的). He was very strange and didn't 7 (遵守) social rules. 8 (自从) the book was published, it had won the 9 (心) of many young people
and became popular. Then his books were sold in great 10 (规模).
招标项目的评审因素一般包括()。
A.价格因素
B.技术因素
C.商务因素
D.市场因素
E.进度因素
通常人们所说的一个完整的计算机系统应包括( )。
A.运算器、存储器和控制器
B.计算机的外围设备
C.系统软件和应用软件
D.计算机的硬件系统和软件系统
对于黄疸的叙述,哪项是不正确的()
A.胡萝卜血症可引起皮肤黄染,巩膜不黄
B.眼结膜下脂肪积聚,往往分布不均匀
C.胡萝卜血症可引起巩膜黄染,皮肤不黄
D.假性黄疸时血清胆红素浓度正常
E.黄疸患者巩膜黄染,首先出现在角膜外周
心包炎的典型体征是:()
A.心前区疼痛
B.发绀
C.面色苍白
D.心包摩擦音
E.心包叩击音