水中酚的测定,我国《生活饮用水标准检验法》是采用()。A.气相色谱法 B.溴化容量法

题型:单项选择题

问题:

水中酚的测定,我国《生活饮用水标准检验法》是采用()。

A.气相色谱法

B.溴化容量法

C.4-氨基安替比林比色法

D.高压液相色谱法

E.荧光分光光度法

考点:理化检验技术理化检验技术题库
题型:单项选择题

阅读理解。

     My name is Jim Green. I am a student. I'm twelve years old. I'm in Class One, Grade Seven. This is

my father. His name is Jeff Green. He is thirty-eight years old. He's a doctor at a hospital. He can play

basketball, but he can't play football. This is my mother. Her name is Ann Green. She is thirty-six years

old. She is a teacher in a university. She can play the piano well, but she can't play the violin. Kate is my

sister. She is eight years old. She is a student, too. She can sing English songs, but she can't ride a horse.

题型:单项选择题

患者,男,40岁,查见右上6面深龋,颊侧近中探及深达根尖的牙周袋,探之溢脓,叩(-),松动Ⅰ度,X线示牙槽骨高度基本正常,根尖区阴影。

初诊印象考虑原因可能为()

A.牙周脓肿

B.牙龈脓肿

C.咬合创伤

D.慢性根尖周炎

E.牙髓牙周联合病变

题型:单项选择题
一个绳子长36米,截去
7
9
,截去______米,还剩______米.
题型:单项选择题

在铁路视觉信号中,绿色表示()。

A、停车

B、减速

C、按规定速度运行

D、后退

题型:单项选择题

()继电器是一种特性类型继电器,能产生脉冲信号,驱动闪光灯。

A.电源

B.控制

C.闪光

D.制动

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