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【单选题】
关于第一心音的叙述错误的是
A.
性质低钝、持续时间较长
B.
在心尖部声音最强
C.
与心尖搏动同时出现
D.
标志着心室舒张期开始
E.
由二尖瓣和三尖瓣骤然关闭引起振动而产生
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参考答案：
举一反三
【判断题】Cycle inventory is inventory that is built up to counter predictable variability in demand.
A.
正确
B.
错误
查看完整题目与答案
【判断题】Seasonal inventory is inventory that is built up to counter predictable variability in demand.
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which of the following statements about nucleic acid structure is wrong?
A.
The covalent backbones of nucleic acids consist of alternating phosphate and pentose residues, and the nitrogenous bases may be regarded as side groups joined to the backbone at regular intervals.
B.
The hydroxyl groups of the sugar residues form hydrogen bonds with water.
C.
The backbones of both DNA and RNA are hydrophobic.
D.
The phosphate groups, with a p K a near 0, are completely ionized and negatively charged at pH 7, and the negative charges are generally neutralized by ionic interactions with positive charges on proteins, metal ions, and polyamines.
查看完整题目与答案
【单选题】When beginning finished goods inventory is $60,000, cost of goods manufactured is $410,000, and ending finished goods inventory is $34,000, what is cost of goods sold?
A.
$436,000
B.
$384,000
C.
$376,000
D.
$316,000
查看完整题目与答案
【单选题】经卵圆孔出颅的脑神经是
A.
视神经
B.
动眼神经
C.
三叉神经第3支
D.
滑车神经
E.
面神经
查看完整题目与答案
【单选题】纵向钢筋搭接接头面积百分率为25%,其搭接长度修正系数为
A.
1.1
B.
1.2
C.
1.6
D.
1.4
查看完整题目与答案
【判断题】记录压电换能器 、 相匹配的谐振频率,改变 和 的距离,再次测定谐振频率,测量5次,取其平均值 为超声波的频率。
A.
正确
B.
错误
查看完整题目与答案
【单选题】纵向钢筋搭接接头面积百分率为25%,其搭接长度修正系数为
A.
1.1
B.
1.2
C.
1.4
D.
1.6
查看完整题目与答案
【单选题】When two mothers brought one child before Solomon, both claiming to be the true mother. What did Solomon do?
A.
He ordered an alternating custody arrangement where both women would have time with the child.
B.
He ordered that neither woman should have the child. Instead he was to be raised as a prince of the court.
C.
He invited the woman to cast lots with the winning woman claiming the child as her own.
D.
He first ordered the child cut in two halves with each woman claiming one half. When the true mother objected Solomon then ruled in favour of this woman, saying that the child was really hers.
查看完整题目与答案
【单选题】以下是谐振频率的调节所涉及的实验内容: 1. 改变S1 、S2 的距离,使示波器的正弦波振幅最大,再次调节正弦信号频率,直至示波器显示的正弦波振幅达到最大值,共测5次取平均。 2. 将专用信号源的 “发射波形”端接至示波器,调节示波器,能清楚地观察到同步的正弦波信号; 3.将换能器的接收信号接至示波器,调整信号频率 ,观察接收波的电压幅度变化,在某一频率点处( 之间,因不同的换能器或介质而异)电压...
A.
4-2-1-3
B.
2-4-3-1
C.
1-3-2-4
D.
2-4-1-3
查看完整题目与答案
相关题目：
【判断题】Cycle inventory is inventory that is built up to counter predictable variability in demand.
A.
正确
B.
错误
查看完整题目与答案
【判断题】Seasonal inventory is inventory that is built up to counter predictable variability in demand.
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which of the following statements about nucleic acid structure is wrong?
A.
The covalent backbones of nucleic acids consist of alternating phosphate and pentose residues, and the nitrogenous bases may be regarded as side groups joined to the backbone at regular intervals.
B.
The hydroxyl groups of the sugar residues form hydrogen bonds with water.
C.
The backbones of both DNA and RNA are hydrophobic.
D.
The phosphate groups, with a p K a near 0, are completely ionized and negatively charged at pH 7, and the negative charges are generally neutralized by ionic interactions with positive charges on proteins, metal ions, and polyamines.
查看完整题目与答案
【单选题】When beginning finished goods inventory is $60,000, cost of goods manufactured is $410,000, and ending finished goods inventory is $34,000, what is cost of goods sold?
A.
$436,000
B.
$384,000
C.
$376,000
D.
$316,000
查看完整题目与答案
【单选题】经卵圆孔出颅的脑神经是
A.
视神经
B.
动眼神经
C.
三叉神经第3支
D.
滑车神经
E.
面神经
查看完整题目与答案
【单选题】纵向钢筋搭接接头面积百分率为25%,其搭接长度修正系数为
A.
1.1
B.
1.2
C.
1.6
D.
1.4
查看完整题目与答案
【判断题】记录压电换能器 、 相匹配的谐振频率,改变 和 的距离,再次测定谐振频率,测量5次,取其平均值 为超声波的频率。
A.
正确
B.
错误
查看完整题目与答案
【单选题】纵向钢筋搭接接头面积百分率为25%,其搭接长度修正系数为
A.
1.1
B.
1.2
C.
1.4
D.
1.6
查看完整题目与答案
【单选题】When two mothers brought one child before Solomon, both claiming to be the true mother. What did Solomon do?
A.
He ordered an alternating custody arrangement where both women would have time with the child.
B.
He ordered that neither woman should have the child. Instead he was to be raised as a prince of the court.
C.
He invited the woman to cast lots with the winning woman claiming the child as her own.
D.
He first ordered the child cut in two halves with each woman claiming one half. When the true mother objected Solomon then ruled in favour of this woman, saying that the child was really hers.
查看完整题目与答案
【单选题】以下是谐振频率的调节所涉及的实验内容: 1. 改变S1 、S2 的距离,使示波器的正弦波振幅最大,再次调节正弦信号频率,直至示波器显示的正弦波振幅达到最大值,共测5次取平均。 2. 将专用信号源的 “发射波形”端接至示波器,调节示波器,能清楚地观察到同步的正弦波信号; 3.将换能器的接收信号接至示波器,调整信号频率 ,观察接收波的电压幅度变化,在某一频率点处( 之间,因不同的换能器或介质而异)电压...
A.
4-2-1-3
B.
2-4-3-1
C.
1-3-2-4
D.
2-4-1-3
查看完整题目与答案
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