团体保险投保人若为不具有完全民事行为能力的人或法人,合同效力待定,若未经有权人追认或消除瑕疵,则可归为无效。
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()是一种连续线性照明器材。
A. 救生照明线
B. 救生气垫
C. 救生软梯
D. 救生抛投器
三相同步交流发电机,转子是由两块爪形磁极,三相绕组,两个滑环和转轴组成。
A. 正确
B. 错误
The total power consumed in a parallel circuit is ()
A. the sum of the powers used in each load (resistor)
B. divided by the number of loads
C. always less than the power used in the smallest load
D. the sum of the powers used in each individual load never more than the power used in the largest load