照明灯垂直下方与中药货垛的水平间距
A．郁金B．藜芦C．甘遂D．草乌E．三棱
参考答案：B
The manager wants to see progress in the company, and I am sure that he will_____.
A．in detail
B．in turn
C．in charge
D．in time
水准测量中，符合水准器气泡严格居中后方可读取（）读数。
A、上丝
B、下丝
C、中丝
D、竖丝
