In color doppler ,we often use blue represent ( )
A: artery
B: vein
C: the flow move toward the probe
D: the flow move away from the probe
A: artery
B: vein
C: the flow move toward the probe
D: the flow move away from the probe
举一反三
- It's natural for our passions to wax and wane as we move from one interest and level of experience to another. A: ebb and flow B: chop and change C: forgive and forget D: toss and turn
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- 用探头查找管里的堵塞。 A: Use a probe to find the blockage in the tube. B: Probe the tube to find the blockage.
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