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【单选题】
关于细胞免疫的描述是错误的 ( )
A.
需要抗原刺激
B.
可特异性杀伤靶细胞
C.
T细胞介导
D.
不需要其它免疫细胞参与
E.
释放淋巴因子引起变态反应
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【简答题】Hades was the king of the D_____(1) or the Underworld, and God of W_____(2). His wife was Persephone, whom he had a________(3) by force. He r_____(4) left the Underworld, and guarded his dominion jeal...
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【单选题】某正弦电压有效值为 380V ,频率为 50Hz ,计时始数值等于 380V ,其瞬时值表达式为( )
A.
V
B.
V
C.
V
D.
无法计算
查看完整题目与答案
【单选题】某正弦电压有效值为380V，频率为50Hz，计时始数值等于380V，其瞬时值表达式为( )
A.
；
B.
；
C.
；
D.
。
查看完整题目与答案
【多选题】解说型的口语表达方式主要用于()的说明。
A.
游览工程安排的说明
B.
专有名词的解释
C.
特有技能技巧的解说
D.
景物外形、功能的叙述
E.
景观深奥文化内涵的解说
查看完整题目与答案
【简答题】酒水的功能和作用有（）、（）、（）、（）。A. 医疗保健作用、交际礼仪作用、情感宣泄作用、去腥调香作用
查看完整题目与答案
【单选题】某正弦电压频率为50Hz,计时始数值等于380V,其瞬时值表达式为:
A.
u=380sin314t (V)
B.
u=380sin(314t+15°) (V)
C.
u=380sin(314t+90°) (V)
D.
u=380sin(314t+45°) (V)
查看完整题目与答案
【单选题】His wife, to whom he ______ for thirty years, was childless.
A.
has married
B.
has been married
C.
had married
D.
had been married
查看完整题目与答案
【单选题】"a grave looking man of five or six and twenty, with an air of more fashion and sense than his wife but of less willingness to please or be pleased. He entered the room with a look of self-consequence...
A.
Mr. John Dashwood
B.
Mr. Palmer
C.
Mr. Henry Dashwood
D.
Sir. John Midleton
查看完整题目与答案
【单选题】某正弦电压有效值为380V,频率为50Hz,计时始数值等于380V,其瞬时值表达式为?
A.
V
B.
V
C.
V
D.
V
查看完整题目与答案
【简答题】听小对话，从A、B、C三个选项中选择正确的选项，回答问题。 1. What are they talking about? A. Food B. Clothes C. Job 2. For whom does the man want to buy a present? A. His wife B. His son C. His father 3. What is the man going to...
查看完整题目与答案
相关题目：
【简答题】Hades was the king of the D_____(1) or the Underworld, and God of W_____(2). His wife was Persephone, whom he had a________(3) by force. He r_____(4) left the Underworld, and guarded his dominion jeal...
查看完整题目与答案
【单选题】某正弦电压有效值为 380V ,频率为 50Hz ,计时始数值等于 380V ,其瞬时值表达式为( )
A.
V
B.
V
C.
V
D.
无法计算
查看完整题目与答案
【单选题】某正弦电压有效值为380V，频率为50Hz，计时始数值等于380V，其瞬时值表达式为( )
A.
；
B.
；
C.
；
D.
。
查看完整题目与答案
【多选题】解说型的口语表达方式主要用于()的说明。
A.
游览工程安排的说明
B.
专有名词的解释
C.
特有技能技巧的解说
D.
景物外形、功能的叙述
E.
景观深奥文化内涵的解说
查看完整题目与答案
【简答题】酒水的功能和作用有（）、（）、（）、（）。A. 医疗保健作用、交际礼仪作用、情感宣泄作用、去腥调香作用
查看完整题目与答案
【单选题】某正弦电压频率为50Hz,计时始数值等于380V,其瞬时值表达式为:
A.
u=380sin314t (V)
B.
u=380sin(314t+15°) (V)
C.
u=380sin(314t+90°) (V)
D.
u=380sin(314t+45°) (V)
查看完整题目与答案
【单选题】His wife, to whom he ______ for thirty years, was childless.
A.
has married
B.
has been married
C.
had married
D.
had been married
查看完整题目与答案
【单选题】"a grave looking man of five or six and twenty, with an air of more fashion and sense than his wife but of less willingness to please or be pleased. He entered the room with a look of self-consequence...
A.
Mr. John Dashwood
B.
Mr. Palmer
C.
Mr. Henry Dashwood
D.
Sir. John Midleton
查看完整题目与答案
【单选题】某正弦电压有效值为380V,频率为50Hz,计时始数值等于380V,其瞬时值表达式为?
A.
V
B.
V
C.
V
D.
V
查看完整题目与答案
【简答题】听小对话，从A、B、C三个选项中选择正确的选项，回答问题。 1. What are they talking about? A. Food B. Clothes C. Job 2. For whom does the man want to buy a present? A. His wife B. His son C. His father 3. What is the man going to...
查看完整题目与答案