Which of the following operation is wrong?
A: Waste contaminated with chemicals and fragile glass instruments should be classified and recycled with household garbage.
B: Harmless treatment should be done for the special, high-risk and highly toxic chemical waste.
C: Rags contaminated with chemicals can still be put in household trash bin.
D: Do not mix two liquids arbitrarily to avoid danger.
A: Waste contaminated with chemicals and fragile glass instruments should be classified and recycled with household garbage.
B: Harmless treatment should be done for the special, high-risk and highly toxic chemical waste.
C: Rags contaminated with chemicals can still be put in household trash bin.
D: Do not mix two liquids arbitrarily to avoid danger.
C
举一反三
- More than three fifths of the country's rivers and lakes are tainted with chemicals, industrial waste or toxic spills like the recent Songhua River benzene slick, which contaminated the water supply in the city of Harbin for days. A: pollute B: paint C: tarnish D: color
- household chemicals
- There are four kinds of trash cans on board, which are red, green, blue and black. Among them, the green one is used to collect_____. A: domestic garbage B: plastic waste C: operation waste D: food waste
- What is the main purpose of this passage（） A: To describe an experiment in which a Hydrapulper is used. B: To introduce Hydrapulper, a new type of garbage disposer. C: To tell what the writer thinks of the recycling of garbage. D: To explain why garbage should be recycled in a new way.
- Which of the following chemicals should not be stored for more than one year, and if exposed to air, peroxides can form when exposed to light A: Ethanol B: Tetrahydrofura C: Ether D: Phenol
内容
- 0
以下表达“自然变化”的英语词汇是_______。 A: toxic chemicals B: chemical industry C: chemical changes D: natural changes
- 1
One of the research area in Green Chemistry is to use renewable feedstocks for chemical production. Which could be used as feedstocks for chemical production in the following resources? A: Kitchen garbage B: Waste cooking oil C: Agricultural wastes D: Microalgae
- 2
The big lake was contaminated with waste waters from nearby factories. A: widened B: blackened C: polluted D: mixed
- 3
Most of the rubbish we throw away can be recycled, such as glass bottles and jars, steel and aluminum cans, plastic bottles and waste paper.
- 4
Before engaging the turning gear and turning the diesel engine, which of the following operation should be done except______.