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【简答题】
DEALING WITH WASTE PLASTIC Every year people throw away millions of tonnes of plastic bottles, boxes and wrapping. These create huge mountains of waste 【C1】______ are extremely hard to get 【C2】______ of. Now, a new recycling process promises to reduce this problem by turning old plastic 【C3】______ new. Scientists have taken 【C4】______ long time to develop their ideas because waste plastic has always been a bigger problem 【C5】______ substances like waste paper. You can bury plastic, but it is years 【C6】______ it breaks down. If you burn it, it just becomes another form. of pollution. A 【C7】______ products, for example bottles, can be re-used but it is expensive or difficult to do this 【C8】______ a lot of plastic products. Now a group of companies has developed a new method 【C9】______ recycling that could save almost 【C10】______ plastic waste. The advantage of the new process is that nearly every type of waste plastic can be used: it does 【C11】______ have to be sorted. In addition, labels and ink may be left 【C12】______ the products. Everything is simply mixed together 【C13】______ heated to more than 400 degrees centigrade 【C14】______ that it melts. It is then cooled, producing a waxy substance that can be used to make new plastic products such as bags, bottles and, among 【C15】______ things, computer hardware. 【C1】______
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举一反三
【单选题】白毫银针属于( )类茶。
A.
白芽茶
B.
白叶茶
C.
白片茶
D.
白末茶
【单选题】白毫银针属于( )P155
A.
花茶
B.
黄茶
C.
白茶
D.
乌龙茶
【判断题】如果触电地点附近没有电源开关或播销,可以用其他利器(如斧头、刀具)将电源线切断。()
A.
正确
B.
错误
【简答题】有丝分裂的()期,染色体的形态结构特征表现得最为明显和典型,是进行染色体形态识别的最佳时期。
【单选题】细胞周期中,染色体形态结构最典型的时期是
A.
前期
B.
中期
C.
后期
D.
末期
【单选题】当引起组织发生反应的阈强度(阈值)增大时,表示该组织的兴奋性
A.
降低
B.
不变
C.
增高
D.
先增高后下降
E.
先下降后增高
【单选题】在下列情况中,不能采用基轴制配合的是( )。
A.
滚动轴承外圈与壳体孔的配合
B.
柴油机中活塞连杆组件的配合
C.
滚动轴承内圈与转轴轴颈的配合
D.
采用冷拔圆型材作轴
【简答题】有丝分裂染色体形态结构最典型、最清晰的时期:
【单选题】染色体形态结构最典型的时期是
A.
前期
B.
中期
C.
后期
D.
末期
E.
间期
【单选题】在海上旅客运输合同中,对于行李的损坏不明显,旅客在离船时或者行李交还时难以发现的,以及行李发生灭失的,旅客应当在离船或者行李交还或者应当交还之日起( )日内,向承运人或者承运人的受雇人、代理人提交书面通知。
A.
3
B.
7
C.
15
D.
30
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