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【单选题】
发酵工程是指利用( )的特定性状和功能,通过现代工程技术生产有用物质或直接应用于工业化生产的技术体系A.
动物细胞、组织
B.
植物细胞
C.
酶
D.
微生物
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反馈参考答案：
举一反三
【简答题】汽油机和柴油机的区别是柴油机没有( )系统。
【单选题】Because of my _____ English, I can’t make myself _____.
A.
broken; understood
B.
broken; understand
C.
break; understood
D.
breaking; understanding
【单选题】The old man lost three sons in the accident. He died with a _____ heart.
A.
broken
B.
breaking
C.
being broken
D.
being breaking
【单选题】Tom asked the candy makers if they could make the chocolate easier ____ into small pieces. [ ]
A.
break
B.
breaking
C.
broken
D.
to break
【单选题】— I got to my office on time. —What if your car______.
A.
would broken down
B.
broke down
C.
breaks down
D.
had broken down
【单选题】根据汽油机和柴油机的区别，下列说法正确的是（ ）
A.
汽油机汽缸顶部有一个火花塞，柴油机汽缸顶部是一个喷油嘴
B.
汽油机吸入的是空气，柴油机吸入的是空气和柴油的混台物
C.
吸气冲程是内能转化为机械能
D.
压缩冲程是内能转化为机械能
【单选题】He went to the payphone to make a call but the phone .
A.
is broken
B.
has broken
C.
was broken
D.
would break
【简答题】“毛重；净重；公重”，正确的翻译为（ ）。
【单选题】. The silence of the library ___ only by the sound of pages being turned over.
A.
has been broken
B.
breaks
C.
broke
D.
was broken
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