【单选题】
缩写“DOT”指()。
A、Department of Treatment
B、Direction of Transportation
C、Department of Transportation
D、Direction of Treatment
A、Department of Treatment
B、Direction of Transportation
C、Department of Transportation
D、Direction of Treatment
A、one and one-half times the length of a dot B、twice the length of a dot C、three times the length of a dot D、four times the length of a dot