肾素-血管紧张素系统激活时
A．醛固酮分泌减少
B．抗利尿激素分泌减少
C．肾上腺素分泌减少
D．肾排NaCl量减少
参考答案：D
The little fat professor is very popular with his students because he is good at ________ different
teaching methods to make his class lively and interesting. [ ]
A. performing
B. replacing
C. employing
D. containing
用一副三角板拼画出下列各角．
75°135°150°120°．
