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举一反三
【单选题】Ladies and gentlemen, welcome to Dalian, a famous summer resort ( 避暑胜地 ) and one of the best tourist cities in China. With clear sky, green mountains, blue seas, fine beaches, clean streets and lovely...
A.
comes in the best season.
B.
is here to join more tourists
C.
may not stand the heat here.
D.
is traveling back home.
【单选题】φ50H10的孔，已知IT10=0.100mm，则上极限偏差为（）mm，下极限偏差为（）mm。
A.
+0.1,0
B.
+0.05，-0.05
C.
0，-0.1
D.
0.2，0.1