男性,35岁,有胃溃疡病史,今日早餐后,突然上腹痛,拒按,查:腹壁呈板状僵硬,可能为
A.阑尾炎
B.胰腺炎
C.胆囊炎
D.溃疡穿孔
E.肠梗阻
参考答案:D
They say your report doesn't ______ the fact. But I don't ______ them ______ this point. [ ]
A. agree to; agree with; at
B. agree on; agree to; on
C. agree on; agree on; on
D. agree with; agree with; on
核火箭发动机较适合于()。
A.长期工作的航天器
B.航天器的姿势控制
C.航天器的位置保持