间接带电作业工作领导人不得直接参加操作,必须在现场不间断地进行监护。
参考答案:对
15年前王老师的年龄是他女儿的7倍,15年后王老师的年龄是他女儿的2倍,问他女儿今年的年龄是多少?()
A.10岁
B.15岁
C.21岁
D.30岁
---Can you guess the new Nike sports shoes?
---Yes. Maybe he asked his grandpa to pay for them, I think.
A.where he bought
B.how he paid for
C.when he paid for
D.why he bought