鉴定钻石用的标准放大镜应该是（）（）（）。
参考答案：10X；无像差、无色差；无蓝色镀膜
The suggestion of the meeting __________was not adopted by the chairman, so the meeting would be held on time.
A．to put off
B．putting off
C．put off
D．being put off
常压渣油实际上也包含了减压渣油（简称VR）这部分。
