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【单选题】
复合控制系统是( )的控制系统。A.
既有开环控制又有后馈控制
B.
既有开环控制又有前馈控制
C.
既有团环控制又有反馈控制
D.
既有前馈控制又有反馈控制
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反馈参考答案：
举一反三
【单选题】患者,女,56岁。稳定型心绞痛病史,今与邻居争吵时突然发生心前区压榨性疼痛,自行舌下含服硝酸甘油,作用是
A.
增强心肌收缩力
B.
增强心肌做功
C.
增加外周血管阻力
D.
扩张外周血管
E.
扩张静脉系统
【单选题】Section B Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You shoul...
A.
how long it has been used
B.
what color it is
C.
whether it has been in a collision
D.
whether it leaks oil
【单选题】患者，女，56岁。稳定型心绞痛病史，今与邻居争吵时突然发生心前区压榨样疼痛，自行舌下含服硝酸甘油作用是
A.
增强心肌收缩力
B.
增加心脏做功
C.
增加外周血管阻力
D.
扩张外周血管
E.
减慢心率
【简答题】围绝经期综合征一系列症状、体征的出现，主要是由于____________、____________所致。
【单选题】Section B Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You shoul...
A.
They used to be indifferent and unfriendly to people.
B.
Their staff will explain its strategy impatiently now.
C.
Their attitude worsens because of the terrible situation now.
D.
They never keep people waiting for more than 20 minutes.
【简答题】围绝经期综合征主要由于 ________________ 减少而引起的一系列症状,其最早出现的症状是________________ 。
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