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问题
单项选择题
在确定急性上消化道出血的原因时,不合适的检查是()
A.胃镜
B.X线钡剂造影检查
C.选择性腹腔动脉或肠系膜上动脉造影
D.核素检查
E.腹部CT
答案
参考答案:
E
选择题
The place _____ the bridge is supposed to be built should be _____ the cross-river traffic is the heaviest.
A. which; where
B. at which; which
C. at which; where
D. which; in which
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问答题 简答题
使用银坩埚时应注意哪些事项?
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