商店出售的含有维生素，xxx，xxx，的保健饮品
参考答案：2106.9090
—You must obey every word of mine!
—________ I don’t?
A．What about
B．How come
C．What if
D．Only if
组合电器主回路绝缘电阻用（）绝缘电阻表测量。
A.500V
B.1000V
C.2500V
D.5000V
