衡量氯化消毒效果的简便指标是（） A.漂白粉中有效氯含量 B.水_爱下问搜题

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问题单项选择题 A1/A2型题

衡量氯化消毒效果的简便指标是（）

A.漂白粉中有效氯含量

B.水中的加氯量

C.水体中的有机物的含量

D.水中的细菌总数

E.水中的余氯量

答案

参考答案：E

选择题

Mary had to wok at evenings and weekends. Only in this way _____ able to complete the report

by the deadline.[ ]

A. was she

B. she was

C. had she been

D. she had been

选择题

The man that people think is a black sheep in the city will ____ imprisonment.[ ]

A. end up with

B. be ended up with

C. end up in

D. be ended up in