隔离开关的安装与调整应使相间连杆在同一水平线上,相间距离不大于()。
A.5mm
B.10mm
C.15mm
D.20mm
参考答案:B
We could take the train or ____ go by car . [ ]
A. alternatively
B. rather
C. so
D. not
局部麻醉药的通用药名词干是
A.-沙坦B.-地平C.卡因D.-司坦E.-奈德