单项选择题
房间隔缺损患者，缺损1．8cm2。现17周妊娠。
产科处理原则正确的是（）
A．无需特殊处理
B．立即行钳刮术终止妊娠
C．立即行负压吸引术终止妊娠
D．立即行剖宫取胎术
E．加强孕期监护继续妊娠
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铝及铝合金管道保温时，可以选用（）。
A.石棉绳
B.石棉板
C.玻璃棉
D.中性的保温材料
