【多选题】【消耗次数：1】
影像增强及电视系统透视的优点是（）
①
A明室操作
②
B剂量降低
③
C便于教学科研
④
D便于实现图像数字化
参考答案：
复制
纠错
相关题目
随机题目
【单选题】
tussle
①
have a hard struggle or fight
②
raise to a higher grade
③
come to a lower level or state
④
make the greatest possible use of
【单选题】
delve
①
give oneself up
②
clasp carefully
③
search carefully and deeply
④
look down upon
【单选题】
sinister
①
not pretended
②
suggesting evil
③
happening in the same time
④
giving orders
【单选题】
ultimatum
①
the general opinion about the character, qualities etc
②
state of being in demand
③
sth. that provokes or annoys
④
final statement of conditions to be accepted
【单选题】
The Nazi regime is devoid ______ all theme and principle except appetite and racial domination.
①
of
②
away
③
from
④
for
【单选题】
I see the Russian soldiers standing on the ________ of their native land, guarding the fields.
①
threshold
②
frontiers
③
entrance
④
gate