单项选择题

CC2530是面向（）通信的一种片上系统,是一种专用单片机（）。 A. 2.2G B. 2.4G C. 3.1G D. 3.6G

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单项选择题

The reason of that hiouracil drugs are used to treat hyperthyroidism is
A、inhibiting the absorption of iodine from the intestinal mucosa
B、inhibiting the TPO activity of follicular cells
C、inhibiting the role of iodine polymerization in the thyroid
D、inhibiting the release of thyroid hormone

不定项选择

哺乳动物成熟的红细胞没有细胞核

A．正确
B．错误