华能山东石岛湾电站(HTR—PM)蒸汽发生器出口处压力为()MPa。
A. 7.0
B. 14.1
C. 15.5
D. 16.2
蛭形巨吻棘头虫的中间宿主是()
A. 淡水螺
B. 陆地螺
C. 蚯蚓
D. 金龟
E. 剑水蛋
开胸手术麻醉中行控制呼吸，可能引起（）
A. 通气与血流比值减少
B. 通气与血流比值先减少后增大
C. 通气与血流比值不变
D. 通气与血流比值先增大后减少
E. 通气与血流比值增大
Which of the actions listed should be taken FIRST to control an oil fire in a fuel oil tank？
A. Commence draining that tank as quickly as possible
B. Seal off all vents to that tank
C. Activate the CO2 system to that tank
D. Shut off the steam heating coils
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