早期胃癌是指
A．仅累及黏膜层B．病变直径＜1cmC．无淋巴结转移D．黏膜层平坦型病变E．仅累及黏膜及黏膜下层
参考答案：E
计算：（1）12+12.1+12.2+12.3+…+12.9=______
（2）123×456456-123123×456=______．
Which of the following laboratory tests should be monitored closely by the nurse while the client is receiving heparin therapy()
A. International normalized ratio (INR).
B. Activated partial thromboplastin time (APTT).
C. Prothrombin time (PT).
D. Thrombin time.
