单项选择题

船闸视准线观测，半测回两次读数差不得超过( )

A.1.0mm
B.0.07mm
C.0.7mm
D.0.5mm
E.0.05mm

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用Ni005水准仪进行一等水准测量时，测得基本分划值和辅助分划值如下，哪一组符合限差要求( )

A.15289
B.16072
C.36574

单项选择题

—Excuse me，I wonder （）.
—Yes，it’s near the bookstore.

A. where we will go for the holiday
B. if there is a lost and found office
C. when she will give me a call
D. how we can go to Hong Kong