当采用渗压计量测监测孔的水位时，两次读数之差应不大于（）。
参考答案：仪器的最小读数
Guo Yanling from Harbin has a good _____ and has _____ 15,000 telephone numbers.[ ]
A. remember; reminded
B. memory; remember
C. remember; memorizes
D. memory; memorized
铝当量的单位是（）.
A.mmAl
B.cmAl
C.mAl
D.dmAl
E.nmAl
