产力是 * * 分娩时将胎儿从子宫内逼出的力量，它主要包括()A．腹肌收缩力量 B．子宫收

下列性质中，可以证明某化合物是离子化合物的是

A．可溶于水

B．具有较高的熔点

C．其水溶液能导电

D．其固体不导电，熔融状态能导电

某患者下颌双侧后牙多数缺失，口底到龈缘的距离为5.0mm，大连接体应用选择设计（）

A.舌杆

B.舌杆加前牙连续卡环

C.舌板

D.与黏膜平行接触的舌杆

E.位于倒凹区上缘的舌杆

试述拉削加工生产效率高的原因。

疟疾发热的显著特点是

A．恶寒发热
B．潮热
C．寒战壮热，发无定时
D．寒热往来，休作有时
E．但热不寒，休作有时

The project team has added some additional functionality which was not required as part of the project. However the customer is satisfied with the project. From a quality perspective, ______ .

A．this is high quality because it exceeded customer expectations

B．this is not acceptable quality because gold plating was done which is not advisable

C．this will mean repeat business from the same customer

D．none of the above