能产生自溶酶的细菌是（）
A.肺炎克雷伯菌
B.肺炎链球菌
C.金黄色葡萄球菌
D.卡他布兰汉菌
E.草绿色链球菌
参考答案：B
Generally speaking, _______ according to the directions, the drug has no side effect.
A．if taking
B．if taken
C．if to take
D．if being taken
单吸多级泵的轴向压力，由吸水侧朝向排水侧。
