结束当它的读数为100V时,流过电压表的电流是()mA。
A.0.2
B.0.5
C.2.5
参考答案:A
She insisted that she ______ not guilty , but we insisted that she ____ into prison. [ ]
A.was; be put
B.be ; was put
C.should be; was put
D.was; should put
PSV是指当患者的自主吸气触发呼吸机,呼吸机以预先设定的压力释放气流,并在整个吸气过程中保持该压力。
PSV为一种流量切换的通气模式,通常当患者吸气流速降低到一定程度时,吸气相切换成呼气相,呼吸机停止送气。这个程度是指峰值的()。
A.50%
B.30%
C.25%
D.20%
E.10%