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【单选题】
一般情况下,铣削加工方法能保证的常用的表面粗糙度Ra值的范围为 。A.
1.6~12.5
B.
0.8~6.3
C.
0.8~1.6
D.
0.1~1.6
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举一反三
【单选题】蛋白质溶液的稳定因素是
A.
蛋白质溶液的黏度大
B.
蛋白质在溶液中有布朗运动
C.
蛋白质分子表面带有水化膜和同种电荷
D.
蛋白质溶液有分子扩散现象
E.
蛋白质分子带有电荷
【简答题】投影法分为 两类。
【多选题】蛋白质溶液的稳定因素是
A.
蛋白质溶液的粘度大
B.
蛋白质在溶液中有布朗运动
C.
蛋白质分子表面带有水化膜
D.
蛋白质分子表面带有同种电荷
E.
蛋白质溶液有分子扩散现象
【单选题】According to the passage, an adherent of the 'nominalist school' cited in the third paragraph would classify a rare new fever in which of the following ways?
A.
She would establish what cures the fever, then compare the treatment with other successful treatments to classify the disease.
B.
She would wait until the disease appears in other patients, then classify it by establishing variations in their symptoms.
C.
She would determine whether the disease is acquired or genetic, then classify it accordingly.
D.
She would isolate the bacteria or virus or genetic anomaly which causes the disease, then classify it accordingly.
E.
She would describe the patient's symptoms, compare them to patients who have had similar symptoms, then treat the pattern as a disease.
【简答题】Mr.Smith asked his secretary to ______a new paragraph in the annual report she was typing. A)inject B)install C)invade D)insert
【单选题】Which of the following concerning unforgiveness is NOT true according to the second paragraph?
A.
Everyone is inclined not to forgive.
B.
Unforgiveness is harmful to people's physical health.
C.
Unforgiveness is only harmful to people's spiritual health.
D.
The figures indicate researchers have realized the importance of forgiveness.
【简答题】The specific economic behaviour that is mentioned in the first sentence of Paragraph 2 might be __（ ）
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