CT扫描中,与噪声无关的是()
A.扫描时采用的算法
B.扫描的层厚
C.物体的大小
D.空间采样频率
E.X线光子的数量
参考答案:D
根据句意和首字母或汉语提示,将单词的正确形式写在题中相应的横线上。
1. I hope to go to Taiwan one day to enjoy the b___________ sights there.
2. He is too fat. His mother asks him to eat more vegetables and l___________ meat.
3. She was very ill, but ___________ (幸运地) she is now out of danger.
4. We will have a meeting on ___________(周四) afternoon.
5. It is well-known that there are four ___________(季节) in a year.
既跨长江干流又跨黄河干流的铁路干线是
a、京沪线;b、宝成线;c、焦柳线;d、湘黔线;e、京九线 [ ]
A、acd
B、ace
C、bce
D、abc