A、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/cc174916-e923-4c81-b174-aebce72c2de4.jpg"title="ex_1289181360140_0.jpg" alt="ex_1289181360140_0.jpg"/><p></p>
B、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/7274df64-4897-4b67-bba1-48cec639a629.jpg"title="ex_1289181387964_0.jpg" alt="ex_1289181387964_0.jpg"/>
C、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/5c53d8b2-6b72-42bf-a7e0-3043d456354f.jpg"title="ex_1289181421156_0.jpg" alt="ex_1289181421156_0.jpg"/>
D、<span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-bidi-font-family: ">以上三参数都可变动</span>