患有以~F哪些疾病的患者应严格控制摄取的盐量
A.高血压
B.肾炎
C.感冒
D.风湿病伴有心脏损害
E.肝炎
参考答案:A,B,D
绝缘工具的检查性试验条件是:将绝缘工具分成若干段进行工频耐压试验,每( )mm耐压75kV,时间为1min,以无击穿、闪络及过热为合格。
A.200
B.300
C.400
You should plot your dead reckoning position().
A.when you obtain an estimated position
B.only in piloting waters
C.at every speed change
D.All of the above are correct