[单选题]测定COD的方法属于（　　）。
A.直接滴定法
B.返滴定法
C.间接滴定法
D.置换滴定法

[单选题]1.16 公安机关交通管理部门对累积记分达到规定分值的机动车驾驶人，扣留驾驶证，对其_____。
A.进行道路交通安全法律、法规教育
B.予以扣留机动车的处理
C.予以吊销驾驶证的处理
D.依法进行行政拘留

[单选题]道岔护轨轮缘槽标准宽度允许偏差为（）
A.±1mm
B.±2mm
C.+3/-2mm
D.+3/-1mm

[单选题]下列属于驱逐性.制服性警械的是()。
A.手铐
B.警棍
C.警绳
D.脚镣

[单项选择]

A Life with Birds

For nearly 17 years David Cope has worked as one of the Tower of London’s Yeoman Warders, (51) known to tourists as Beefeaters. David, 64, lives in a three-bedroomed flat right at the (52) of the Byward Tower, one of the gatehouses. " (53) our bedroom we have a marvellous view of Tower Bridge and the Thames. " says David.
The Tower of London is famous (54) its ravens, the large black birds which have lived there for over three centuries. David was immediately fascinated by the birds and when he was (55) the post of Raven Master eight years ago he had no (56) in accepting it. "The birds have now become my life and I’m always (57) of the fact that I am (58) a tradition. The legend says that if the ravens leave the Tower, England will fall to enemies, and it’s my job to (59) sure this doesn’t happen!"
David
A. aware
B. knowing
C. pleased
D. delighted