下列各方程组一定是关于x,y的二元一次方程组的是( ) A.2x-z=62x-y=

题型:选择题

问题:

下列各方程组一定是关于x,y的二元一次方程组的是(  )
A.
2x-z=6
2x-y=3
B.
2x-y=1
y=3z+1
C.
3x-2y=1
x+y=5
D.
x2-1=0
x+y=1
考点:二元一次方程组的定义
题型:选择题
It was only a few weeks after my surgery. I went to Dr. Belt’s office for a   36 . It was just after my first chemotherapy treatment(化疗). My scar was still very tender.(疼痛的)   37 . I was taken to an examination room to have my blood   38 , again—a terrifying process for me, since I’m so frightened of   39 .
I lay down on the   40 . Then Ramona entered the room. Her   41  smile was familiar, and   42  in contrast to my fears. I’d first seen her in the office a few weeks earlier. She wasn’t my   43  on that day, but I remember her because she was laughing. What could she   44  find to laugh about at a time like this? So I decided she wasn’t   45  enough about the whole thing.
But this day was   46 . Ramona had taken my blood before. She   47  my fear of needles, and she kindly   48  the medical equipment under a magazine. As we opened the layers of bandage, the   49  scar on my chest could be seen.
She gently   50  over and ran her hand across the scar,   51  the smoothness of the healing skin. I began to cry gently and quietly. She brought her warm eyes to mine and said, “You haven’t   52  it yet, have you?” And I said, “No.”
I continued to cry gently. In   53  tones she said. “This is part of your body. This is you. It’s okay to touch it.” But I couldn’t. So she touched it for me. The   54 . The healing wound. And beneath it, she touched my heart.
That night as I lay down, I gently placed my hand on my chest and I left it there   55  I fell asleep. I knew I wasn’t alone.
小题1:
A.prescriptionB.checkupC.conversationD.discussion
小题2:
A.At onceB.As usualC.In factD.In addition
小题3:
A.correctedB.mixedC.drawnD.cleaned
小题4:
A.doctorsB.nursesC.bloodD.needles
小题5:
A.operation tableB.office floorC.examining bedD.test bed
小题6:
A.weakB.bitterC.shyD.warm
小题7:
A.worked outB.stood outC.found outD.gave out
小题8:
A.girlB.partnerC.companionD.nurse
小题9:
A.accidentallyB.particularlyC.possiblyD.actually
小题10:
A.seriousB.curiousC.worriedD.nervous
小题11:
A.differentB.difficultC.pleasantD.common
小题12:
A.talked aboutB.got aroundC.knew aboutD.put away
小题13:
A.foundB.replaced C.showedD.hid
小题14:
A.oldB.wornC.freshD.fine
小题15:
A.cameB.wentC.searchedD.reached
小题16:
A.examiningB.coveringC.pressingD.removing
小题17:
A.watchedB.discoveredC.touchedD.unfolded
小题18:
A.toughB.softC.coldD.strict
小题19:
A.bandageB.soulC.painD.scar
小题20:
A.afterB.untilC.sinceD.when
题型:选择题

开盒时发现石膏有破损,可能的原因为()

A.下层型盒石膏表面粗糙或有倒凹

B.分离剂没有涂好

C.覆盖在牙上的石膏厚度不够

D.人工牙太靠近型盒边缘

E.石膏尚未完全凝固就开盒

题型:选择题

某外贸进出口公司为了骗取出口退税,对某批产品采用虚报出口和伪造出口退税单证的方法,骗取出口退税款20万元(已知该批产品已缴纳税款21万元),则对该外贸进出口公司应当如何定罪处罚

A.以骗取出口退税罪定罪处罚
B.以偷税罪定罪处罚
C.以骗取出口退税罪和偷税罪定罪,实行数罪并罚
D.以诈骗罪定罪处罚

题型:选择题

作业临近没有围蔽的带电设备,现场有作业班3人在作业,另有雇佣的2名临时工在搬运材料,则可能暴露于风险的人员有()人。

A.0人

B.2人

C.3人

D.5人

题型:选择题

室内接地铜排两端宜(如受条件限制,一端也可)采用()的镀锌扁钢或不小于()的多股铜导线,沿墙体直接与室内接地引入线连接.

A.20mm×2mm,85mm2

B.30mm×3mm,90mm2

C.40mm×4mm,95mm2

D.50mm×5mm,100mm2

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