孔板入口边缘不尖锐，会造成流量示值（）。
A.偏高
B.偏低
C.不受影响
D.可能偏低或偏高
参考答案：D
临床上怀疑急性脑中风宜选择的检查方法有（）
A.颅骨平片
B.血管造影
C.CT
D.MRI
E.脑室造影
完成反意疑问句。
1. The Morse Code is rarely used today, _____________?
2. He made few mistakes in the test, ____________?
3. Nothing is more important than learning, ____________?
4. He could hardly remember me, ____________?
5. There is a little milk in the bottle, _____________?
