在测定过程中出现下列情况,属于操作错误的是() A.称量某物时未冷却至室温就进行称量

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问题:

在测定过程中出现下列情况,属于操作错误的是()

A.称量某物时未冷却至室温就进行称量

B.滴定前用待测定的溶液淋洗锥形瓶

C.称量用砝码没有校正

D.用移液管移取溶液前未用该溶液洗涤移液管

E.总是多加了一滴滴定液

考点:理化检验技术理化检验技术题库
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﹣a5b+81ab.

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最合适的治疗方案是

A.单纯肾切除术
B.根治性肾切除术
C.经腹肾切除+放疗和化疗
D.肾、输尿管全长及部分膀胱切除术
E.肾切除+免疫治疗

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班主任工作的重点是()。

A.对学生进行思想品德教育

B.教育学生努力学习,完成学习任务

C.指导班委会工作

D.评定学生操行

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我国公共危机管理法制的基本原则有()

A.法治原则

B.应急性原则

C.基本权利保障原则

D.主动性原则

E.防范性原则

题型:多项选择题

World Water Shortage


A new study warns that about thirty percent of the world’s people may not have enough water by the year 2025.
A private American organization called (1) Action International did the new study. It says (2) than three-hundred-thirty-five-million people (3) enough water now. The people live in twenty-eight (4) . Most of the countries are in Africa or the (5) East.
P-A-I researcher Robert Engelman says (6) the year 2025, about three-thousand-million people (7) lack water. At least 18 more countries are (8) to have severe water problems. The demand (9) water keeps increasing. Yet the amount of water on Earth (10) the same.
Mr. Engelman says the population in countries that lack water is (11) faster than in other parts of the world. He says (12) growth in these countries will continue to (13) .
The report says lack of water in the future may (14) in several problems. It may increase health (15) . Lack of water often means drinking (16) not safe. Mr. Engelman says there are problems (17) over the world because of diseases, such as cholera, (18) are carried in water. Lack of water may also result (19) more international conflict. Countries may have to (20) for water in the future. Some countries now get sixty percent of their fresh water from other countries. This is true of Egypt, the Netherlands, Cambodia, Syria, Sudan, and Iraq. And the report says lack of water would affect the ability of developing to improve their economies. This is because new industries often need a large amount of water when they are beginning.

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