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【简答题】
Listen again and complete the answers to the following questions. 1. How important is the Rhine to Western Europe? It is most important waterway . 2. What happened to the Rhine from the 1950s to the 1970s? It was . Fish disappeared and it was dangerous to swim in it . 3. What happened in 1986? A fire broke out at a chemical plant in Basel, which caused to leak into the Rhi ne . 4. What was the good result of what happened in 1986? The countries along the Rhine realized that they should work together to and keep it clean. 5. How often is the water at various points in the Rhine extracted and checked? minutes, 24 hours a day.
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举一反三
【简答题】传热的基本方式为 ________.________._______ 。其中, 可以在真空中传热的方式是 ________。
【单选题】【C3】
A.
hardly
B.
seldom
C.
occasionally
D.
always
【多选题】圆柱体被平面所截,交线可能有( )。
A.
B.
椭圆
C.
矩形
D.
双曲线
【单选题】以下不属于颅内血管性头痛的特点是
A.
头痛发生急剧
B.
头痛呈持续性不减
C.
多伴有不同程度的意识障碍
D.
多伴有发热
E.
多无发热
【单选题】For any 3 given numbers, which of the following is always equivalent to adding the 3 numbers together and then dividing the sum by 3? Ⅰ. Ordering the 3 numbers numerically, from highest to lowest, and...
A.
Ⅰ only
B.
Ⅱ only
C.
Ⅰ and Ⅱ only
D.
Ⅱ and Ⅲ only
E.
None of the above
【单选题】In the first paragraph, “we are always mindful of...” means “________.”
A.
we are always worried about…
B.
we always look forward to…
C.
we are always aware of…
D.
we always put up with…
【单选题】血管性头痛的特点多是()
A.
胀痛
B.
电击痛
C.
重压感
D.
牵拉痛
E.
紧箍感
【单选题】冻干机中把冻干箱内产品升华出来的水蒸气冻结吸附在其金属表面上的部件是
A.
制冷压缩机
B.
冻干箱
C.
真空系统
D.
冷凝器
【单选题】【C3】
A.
rarely
B.
normally
C.
sometimes
D.
always
【简答题】传热的基本方式为、、三种。
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