多项选择题

关于灰分检查说法正确的是( ) A.
检测所用的坩埚使用前应恒重 B.
供试品炽灼后也要恒重 C.
移动坩埚不得徒手操作 D.
炽灼温度为500℃~600℃ E.
炽灼时可以采用蒸发皿装供试品

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驱动防滑控制系统可以通过踩制动踏板实现减小驱动车轮滑转。
A、正确
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Which of the following is NOT TRUE about the Bronte siblings? ____

A．Anne Bronte was the youngest.
B．Two of them died very young.
C．Both boys wrote novels.
D．Charlotte Bronte survived the rest.