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【单选题】
在具有过载保护的接触器自锁正转控制线路中,若按下起动按钮,接触器KM不能吸合原因不可能是 。
A.
热继电器动断触点接触不良
B.
停止按钮接触不良
C.
起动按钮接触不良
D.
接触器自锁触点接触不良
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【单选题】Which of the element below contributes the most to the Earth’s mass?
A.
silicon
B.
alumina
C.
iron
D.
megnesium
【单选题】In the C++ Standard Template Library, vectors and deques differ in their interfaces for handling which of the following operations? I. Insertion of an element at the front of the container II. Inserti...
A.
I and III only
B.
I and II only
C.
III only
D.
I only
【多选题】which of the following is the element of the essential of duodenal ulcer diagnosis
A.
Epigastric pain often relieved by food or antacids
B.
Epigastric tenderness
C.
Normal or increased Gastric Acid secretion
D.
Signs of ulcer disease on upper gastrointestinal x rays or endoscopy
E.
Evidence of H pylori infection
【单选题】Which of the following is NOT the element which can stimulate the secretion of gastric acid?
A.
Secretin
B.
Vago-vagal reflex
C.
Local nervous plexus reflex
D.
Mechanical expansion of food
【判断题】对于长期合作需求而言,合作伙伴应选择竞争性合作伙伴。
A.
正确
B.
错误
【判断题】对于长期合作需求而言,合作伙伴应选择竞争性合作伙伴。
A.
正确
B.
错误
【单选题】Which of the following increases the total variable by the contents of the element located in the second row, fi rst column of the purchases array? The variable and array have the int data type.
A.
purchases[2][1] += total;
B.
purchases[1][2] += total;
C.
total += purchases[2][1];
D.
total += purchases[1][0];
【单选题】山西省境内水量较稳定、流域面积最大的河流是( )。
A.
涑水河
B.
漳河
C.
滹沱河
D.
汾河
【单选题】Which of the following is not the element of the narration?
A.
time
B.
ellipsis
C.
character
D.
conflict
【简答题】简述儿童品德发展的基本特点。
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