未知题型 做黏性土的渗透试验时，试样厚4cm，横截面积为30cm2，玻璃测压管内径为0.6cm。经过1000s，水头差由175cm变为150cm，则该黏性土的渗透系数为( )。 A．8.2×10-7cm/s B．7.5×10-7cm/s C．5.8×10-7cm/s D．4.3×10-7cm/s

未知题型 A．Going to a counselor is well worthwhile.B．Counselors usually don't care about the issue of a major.C．A lot of people go to see the counselor about the issue of a major.D．What major to choose is not so important for finding a job.

未知题型 A．She totally agrees with him.B．She thinks it is easier said than done.C．She thinks that he is a rather important person.D．She feels that what he says is simply nonsense.