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【多选题】
中药的药性理论主要包括
A.
四气
B.
C.
升降浮沉
D.
E.
毒性
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A.
100次
B.
200次
C.
300次
D.
400次
E.
500次
【多选题】磁通门磁力计由()组成
A.
探头
B.
激励电路
C.
监测电路
D.
电源电路
【单选题】如果长期燃油修正显示的是低于0%的负值,则表明( )。(II)
A.
混合气过浓,ECM 使喷油脉宽减小
B.
混合气过稀,ECM 使喷油脉宽增大
C.
短期燃油修正已经失效
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A.
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B.
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C.
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D.
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【单选题】20090202 下列叙述中,不正确的是 (2)
A.
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B.
计算机软件、硬件设计上的漏洞往往会被攻击者利用,因此,要加强计算 机系统的安全防护
C.
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D.
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