三相电压互感器二次熔丝熔断一相时电压表如何指示?
参考答案:
如A相熔丝断,其电压指示情况如下。
BC相电压正常,AC相电压等于AB相电压,等于1/2BC相电压。
---It’s said that scientists are working hard to ________ a way to deal with H7N9 avian influenza(H7N9禽流感)
---Really? That’s great!
A.caught up with
B.come up with
C.agreed with
D.compared with
患者,男性,59岁。缺失,舌侧前部牙槽骨为斜坡型,口底深,上颌牙正常。
如果采用舌杆做大连接体,连接体与舌侧黏膜的关系是()
A.轻轻接触
B.密切接触
C.离开黏膜0.3~0.4mm
D.离开黏膜0.5~1.0mm
E.进入软组织倒凹