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【单选题】
几何尺寸相同的两根杆件，其弹性模量分别为E 1 =180GPa，E 2 =60GPa，在弹性变形的范围内两者的轴力相同，这时产生的应变的比值应为（）。A.
1/3
B.
1
C.
2
D.
3
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举一反三
【单选题】Most of the artists to the party were from that university.
A.
invited
B.
to invite
C.
had been invited
D.
being invited
【单选题】下列哪种砖是以黏土、页岩、煤矸石为主要原料，经过制坯成型、干燥、焙烧而成的一种具有多排小孔的制品。()
A.
蒸压灰砂砖
B.
烧结空心砖
C.
烧结普通砖
D.
烧结多孔砖
【单选题】Most of the artists ___________ to the party were from South Africa.
A.
to invite
B.
invited
C.
had been invited
【简答题】Most of the artists ______ to the party were from South Africa. A．to be invited B．invited C．being invited D．had been invited
【单选题】Most of the artists ______ to the party were from China． [ ]
A.
invited
B.
to invite
C.
being invited
D.
to be invited
【单选题】图表示了:家庭电路中四种用电器正常工作40小时的耗电情况.则( )
A.
甲用电器可能是笔记本电脑
B.
乙和丙产生的电热肯定相同
C.
电流通过乙做功7.2×10 7 J
D.
丁的实际功率最大
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