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【判断题】
劳动报酬是劳动合同的可选择条款。( ) A. 对 B. 错A.
正确
B.
错误
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举一反三
【单选题】In sewage treatment, the term"maceration'refers to the process of ____.
A.
breaking up solid matter into fine particles
B.
precipitating non-decomposed waste in a collection tank
C.
chemically adjusting the sewage pH to 7.0
D.
eliminating bacterium coming from the sewage
【单选题】十七世纪下半叶法国男装借鉴_______建筑风格，款式奢华色彩艳丽，雍容繁复，服装的华丽程度甚至超越女装，这是个特有的男装女性化的历史时期，也是男装中性化的发端。
A.
法式
B.
拜占庭
C.
地中海
D.
巴洛克
【单选题】The solution to water pollution is ______ .
A.
storing the sewage in a giant tank
B.
dumping more sewage into the distant ocean
C.
building more sewage disposal plants
D.
replacing underground pipes full of sewage
【单选题】How does the Biofilter Method process sewage？
A.
By causing growth of bacteria in the sewage
B.
By utilizing a biological film
C.
By treating organic matter in biochemical oxidation
D.
All of the above
【单选题】Dump sewage into oceans and rivers is a serious form of pollution.
A.
Having dumped sewage
B.
Being dumped sewage
C.
Dumped sewage
D.
Dumping sewage
【单选题】In sewage treatment, the term maceration refers to the process of ______.
A.
breaking up solid matter into fine particles
B.
precipitating non-decomposed waste in a collection tank
C.
chemically adjusting the sewage ph to 7.0
D.
eliminating bacterium coli from the sewage
【单选题】____ are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
A.
anaerobic bacteria
B.
aerobic bacteria
C.
air bubbles
D.
disinfection chemicals
【简答题】The processing of sewage(污水) requires considerable amounts of electricity. Many sewage treatment plants in the U.S. have become self-sufficient by using the methane gas (沼气)given off by sewage.
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