單項(xiàng)選擇題
A.±3umB.±5umC.±10umD.±13um
A.±10umB.±5umC.±8umD.±13um
A.±150B.±180C.±200D.±220
A.≤30℃B.≤35℃C.≤40℃D.≤100℃
A.0.18B.0.2C.0.22D.0.24
A.1B.5C.10D.0.5
A.2克B.0.2克C.1克D.0.5克
A.0.8B.0.9C.1D.1.2
A.1.8-6.0B.2.0-6.2C.2.0-6.0D.1.8-5.0
A.1.8-6.0B.1.6-6.5C.1.6-6.0D.1.8-6.5
A.1/3B.2/3C.1/4D.1/2