伤寒后再燃 ()
A.潜伏期
B.初期
C.极期
D.缓解期
E.恢复期
参考答案:D
喷砂抛光机器的气源压力范围是 ()
A.1.3~1.4MPa
B.1.1~1.2MPa
C.0.9~1.0MPa
D.0.6~0.8MPa
E.0.3~0.5MPa
._____a wonderful sense of humour.
A.The English have
B.The English has
C.English have
D.English has