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【单选题】
患者，男性，40岁。下肢骨折经石膏固定1小时后，患者诉伤肢远端疼痛，护士发现足趾颜色发紫，此时护士应立即A.
报告医生
B.
继续观察
C.
使用止痛剂
D.
局部按摩
E.
局部垫海绵垫
手机使用
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反馈参考答案：
举一反三
【单选题】设置 LED 灯亮语句( )。
A.
digitalWrite(LED,LOW)
B.
digitalRead(LED,HIGH)
C.
digitalWrite(LED,HIGH)
D.
digitalRead(LED,LOW)
【简答题】It helps people go to the top of house.
【单选题】－The train is leaving right now, but David hasn't arrived yet. －Well, he said he here on time. [ ]
A.
came
B.
will be C．would come D. can be
【单选题】—The train is leaving right now, but David hasn't arrived yet. —Well, he said he ____ here on time. [ ]
A.
came
B.
will be
C.
would come
D.
can be
【简答题】红色叉形灯或者箭头灯亮时表示什么?
【单选题】-The train is leaving right now, but Tom hasn't arrived yet. -Well, he said he ______ here on time. [ ]
A.
would come
B.
will come
C.
will be
【简答题】S7-300PLC CPU的led指示灯中SF亮表示____,BF灯亮表示____。
【简答题】STELA板上有四组表示轨道电路状态的LED灯：P灯、S灯、R灯。其中（）亮表示对应的轨道电路未被占用，（）亮表示发送报文，（）亮表示读取报文。
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