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【单选题】
对于给定液体表面上一段分界线为l,其表面张力大小和:
A.
表面张力与l成正比,力指向液体内部
B.
表面张力与l成正比,力与l垂直且沿液面切线方向
C.
表面张力与l成反比,力指向液面各个方向
D.
表面张力与l成反比,力与l垂直且指向各个方向
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举一反三
【单选题】-Can I watch TV now? -No, you ________. You ________ do your homework first.
A.
can; must
B.
can’t; mustn’t
C.
can’t; must
D.
can; mustn’t
【单选题】某工程合同金额200万元,合同工期5个月,预付款36万元,主材科费所占比重60%,每月完成工程量40万元,那么第一次扣回预付款的数额为( )万元
A.
10
B.
12
C.
14
D.
16
【单选题】某工程合同金额200万元,合同工期5个月,预付款36万元,主材料费所占比重60%,每月完成工程量40万元,那么第一次扣回预付款的数额为( )万元。
A.
10.0
B.
12.0
C.
14.0
D.
16.0
【单选题】A: Mum, _____ I watch TV now? B: No, you . You _____ finish your homework first. [     ]
A.
may, can't, must
B.
can, can't, may
C.
must, needn't, must
D.
may, mustn't, can
【单选题】下列植物中能增添花境野趣的最好植物是
A.
五色草
B.
一串红
C.
苔草
D.
矮牵牛
【单选题】硬件故障中断和程序性中断都属于( )。
A.
强迫性中断事件
B.
自愿性中断事件
C.
访管中断
D.
以上都不是
【单选题】----Mum, ____ I watch TV now? ----No, you ____. You _____ finish your homework first.
A.
may; can’t; must
B.
can; can’t; may
C.
must; needn’t; must
D.
may; mustn’t; can
【单选题】---Can I watch TV now? ---No, you .You________ do your homework first.
A.
can; can
B.
can’t ; must
C.
can’t; can
D.
must ; can
【单选题】-What are you looking ______? -My watch. I can't find it now. Have you seen it anywhere? [     ]
A.
up
B.
for
C.
out
D.
back
【单选题】There is _____ with my watch. Can you get someone _____ it right now? [     ]
A.
wrong something, check
B.
something wrong, to check
C.
anything wrong, check
D.
anything wrong, to check
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