患者男性，65岁，因“咽部不适1年，吞咽阻挡15天”来诊。针对患者，需要完善的检查为（）
A. 电子胃镜
B. 颈部强化CT
C. 颈部MRI
D. 电子喉镜
E. 颈部彩色超声
查看答案
模板拆除，底模拆除时长度8m以内梁类构件应达到设计的混凝土立方体抗压强度标准值的（）
A. 50%
B. 75%
C. 90%
D. 100%
On a series 1010 lightweight access point， the alarm led is flashing red， and all other leds are off. What is the lightweight access point indicating？（）
A. it has lost contact with controller.
B. its ip address already exists.
C. it requires a code upgrade.
D. it is operating normally.
微信支付 
支付宝支付