用水准仪进行视距测量时,仪器视线水平。此时水平距离是尺间隔l的()倍。
A、300
B、200
C、100
D、50
参考答案:C
The boys, ________ with this somewhat terrifying figure, had lost their tongues.
A.to face
B.having faced
C.faced
D.facing
患者久病眼睑开合失司,下肢运动不利,其病在
A.阴跷脉、阳跷脉B.阴维脉、阳维脉C.督脉、任脉D.冲脉、任脉E.阴跷脉、阴维脉