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【单选题】
客船上的所有动力滑动门,满足在船舶处于正浮状态时,能从驾驶室的总控制台不超过( )内被同时关闭
A.
30秒
B.
60秒
C.
90秒
D.
120秒
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【简答题】以下为商务信函的摘录,请翻译。 We would refer you to our captioned enquiry sent to you on the 22nd of June, which we trust must have long been in your possession, as up to date, we do not appear to have received any...
【多选题】《中国药典》(2015年版)中异戊巴比妥及其钠盐银量法,以下测定条件正确的是()。
A.
供试品加入甲醇溶解
B.
以碳酸钠介质中进行滴定
C.
以生成二银盐沉淀的方法指示终点
D.
用硝酸银滴定液滴定
E.
用银-玻璃电极系统指示终点
【多选题】《中国药典》(2015年版)中异戊巴比妥及其钠盐银量法,以下测定条件正确的是( )。
A.
供试品加入甲醇溶解
B.
在碳酸钠介质中进行滴定
C.
以生成二银盐沉淀的方法指示终点
D.
用硝酸银滴定液滴定
E.
用银-玻璃电极系统指示终点
【多选题】《中国药典》(2015年版)中异戊巴比妥及其钠盐银量法,以下测定条件正确的是( )。
A.
供试品加人甲醇溶解
B.
在碳酸钠介质中进行滴定
C.
以生成二银盐沉淀的方法指示终点
D.
用硝酸银滴定液滴定
E.
用银-玻璃电极系统指示终点
【判断题】中国药典( 2015版)对异戊巴比妥及其钠盐,苯巴比妥及其钠盐均采用银量法测定含量。
A.
正确
B.
错误
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【单选题】天涯社区的愿景与使命是?
A.
全球华人网上家园
B.
让生活变得简单快乐
C.
诚信、团队、创新、激情
D.
以客户为先
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