对诊断血胸最有价值的是（）。
A.胸痛、呼吸短促
B.血压下降、脉搏细弱
C.气管移向健侧
D.胸穿抽出血液
E.患侧呼吸音消失
参考答案：D
—Excuse me. Is there a bank near here?
—No, ___. But you can find one in Yang Fang Road[ ]
A. there isn't
B. it isn't
C. they aren't
D. there is
某处方如下：氯化钠8.6g，氯化钾0.3g．氯化钙0.33g，注射用水加至1000mL（已知氯化钾的1%冰点下降度为0.44）。求氯化钙的1%冰点下降度是多少？
