HYZ4正压氧气呼吸器的适应温度为()。
A.0℃~40℃
B.-10℃~40℃
C.10℃~40℃
D.10℃~60℃
参考答案:B
关于胆汁淤积性黄疸的实验室检查,错误的是()
A.尿胆原增加
B.总胆红素增加
C.结合胆红素>50%~60%
D.碱性磷酸酶显著增加
E.尿胆红素明显增加
—Can you tell me ________ to send this postcard to New York by airmail?
—Let me check. Oh,it’s one dollar.
A.how long it takes
B.how much it costs
C.who can help me
D.if there’s a post office