If a cargo of kerosene were considered too lean to explode,then it must be().
A. above the explosive range
B. within the explosive range
C. below the explosive range
D. None of the above
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在《三侠五义故事》的《李太后还朝》中李娘娘(太后)是谁?()
A. 曾经的刘妃
B. 曾经的李妃
C. 寇珠
雷电侵入信号设备的主要途径有()、供电电源、()以及电位反击。
0f all the extinguishing agents listed below, which one has the greatest capacity for heat adsorption?().
A. Water fog
B. Carbon dioxide
C. Dry chemical
D. Solid stream of water
香港张先生是来内地的大学生,假期随中国旅游团到澳大利亚旅游,属于出境业务
A. 正确
B. 错误