中央性颌骨骨髓炎感染来源多为 A．牙源性 B．腺源性 C．损伤性 D．血源性 E．医

某一单摆的位移-时间如图所示，则该单摆的

A．振幅是0.20m

B．周期为1.25s

C．频率为1.0Hz

D．摆长为2.0m

He was badly hurt last night. That is _____ he didn’t come to school.

A．because

B．that

C．why

D．what

Simon improved his way of study. ________, he has made great progress.

A．As a result

B．As usual

C．In other words

D．In all

一婴儿患化脓性脑膜炎，CSF培养为革兰阳性小杆菌，血平板培养18～24h菌落为灰白色有狭窄透明溶血环，半固体培养基上出现倒伞状生长，初步诊断为（）

A.流感嗜血杆菌

B.溶血棒状杆菌

C.枯草芽孢杆菌

D.产单核细胞李斯特菌

E.红斑丹毒丝菌

车辆电子标签存有哪些车辆信息？