某一个测段（或井段），上、下二测点处的井眼方向线之间的夹角为该测段的（）
A.井斜角
B.方位角
C.狗腿角
参考答案：C
—Did you catch the early bus this morning?
—No. It had left the stop________I arrived there.[ ]
A. as soon as
B. as the time
C. by the time
D. during the time
足月儿生后1h出现青紫及呼气性呻吟。体检呼吸困难，胸廓不对称，舟状腹。心音在右侧胸部听到，呼吸音轻。最可能的诊断是（）
A.肺大叶性气肿
B.膈疝
C.气胸
D.气管食管瘘
E.膈膨升
