开车中102-JT暖机是否充分,可根据()来进行判断。
A.主蒸汽温度
B.抽汽温度
C.排汽温度
D.热膨胀值
参考答案:D
我市的阳新县是闻名于全国的苎麻之乡,某农民种植的苎麻因欠缺氮肥和磷肥而出现生长缓慢,叶色淡黄,且产量偏低情况,下列肥料最适合他施用的是( )
A.尿素[CO(NH2)2]
B.磷酸二氢钙[Ca(H2PO4)2]
C.磷酸二氢铵(NH4H2PO4)
D.草木灰(主要含K2CO3)
To our surprise, not a single word _______ in the discussion last Thursday.
A.had the teacher said
B.said the teacher
C.the teacher had said
D.did the teacher say