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【单选题】
Which of the following are NOT environmental impacts of a tidal barrage?A.
Silt accumulates behind the barrier
B.
Shipping is affected by the barrier
C.
The turbidity of the water behind the barrier is altered
D.
The time the estuary is under water is changed
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【单选题】下列关于渗漉法优点的叙述中，哪一项是错误的？（）。
A.
有良好的浓度差
B.
溶媒的用量较浸渍法少
C.
操作比浸渍法简单易行
D.
浸出效果较浸渍法好
E.
对药材的粗细要求较高
【单选题】下列有关渗漉法优点的叙述错误的是
A.
有良好的浓度差
B.
溶剂的用量较浸渍法少
C.
浸出效果较浸渍好
D.
适应于新鲜药材的浸出
E.
不必进行浸出液的和药渣的分离
【单选题】The kites used by German U-boats in World War Ⅱ for the military purpose were made of ______.
A.
brown paper
B.
plastic material
C.
light-weight cloth
D.
traditional silk
【简答题】He wants _________(is) a teacher. He seemed _________(learn) a lot. ___________(save) money, he has tried every means. She worked hard_________(pass) the exam. Our tasks are ___________(clean) the pla...
【单选题】He tried every ________ to get ________ about the war.
A.
means; some information
B.
ways; information
C.
method; informations
D.
way; an information
【单选题】He tried every _____ to get _____ about the Iraq War.
A.
ways; information
B.
method; information
C.
means; some information
D.
way; an information
【简答题】建设单位招标应当具备的条件:
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