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【单选题】
平面简谐波在弹性媒质中传播,某一时刻媒质中某处于平衡位置时,它的A.
动能为零，势能最大
B.
动能最大，势能为零
C.
动能势能均为零
D.
动能势能均最大
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举一反三
【单选题】If we are asked by the police, we cannot but___what had happened.
A.
to tell
B.
tell
C.
to be telling
D.
telling
【单选题】_____with what they had done, we felt we still had too much to do.
A.
compared
B.
comparing
C.
having compared
D.
being compared
【多选题】下列有关办理税务登记的做法，正确的有（ ）。
A.
纳税人遗失税务登记证件的，应当在15日内书面报告主管税务机关，并登报声明作废
B.
纳税人税务登记的内容发生变化时，应自工商行政管理部门办理变更登记之日起30日内，向原税务登记机关申报办理变更税务登记
C.
纳税人工商行政管理机关吊销营业执照的，应自营业执照被吊销之日起30日内，向原税务登记机关申报办理注销税务登记
D.
纳税人在办理注销登记后，应当向税务机关结清应纳税款、滞纳金、罚款、缴销发示和其他税务证件
E.
纳税人因住所变动涉及改变主管税务登记机关的，应向原税务登记机关申报办理注销税务登记，并在30日内向迁达地税务机关申请办理税务登记
【单选题】Before we let him go, we asked him to promise anyone what we had said to him.
A.
.to tell not
B.
not to tell
C.
.to not tell
D.
not tell to
【单选题】旅客列车按旅客列车编组表进行编组,机车后第一位编挂一辆未搭乘旅客的车辆作为( ),列车最后一辆的后端应有压力表、紧急制动阀和运转车长乘务室。
A.
行李车
B.
隔离车
C.
邮政车
D.
发电车
【单选题】__we didn't get seems better than __we had.
A.
what what
B.
what that
C.
that that
D.
that what
【单选题】What we need is a ______ government. We have had three presidents in only one and a half year.
A.
changeless
B.
constant
C.
stationary
D.
stable
【单选题】This size of the audience,______, was well over twenty thousand. A. whom we had expected B. as we had expected C. what we had expected D. we had expected that
A.
1
B.
2
C.
3
D.
4
相关题目：
【单选题】__we didn't get seems better than __we had.
A.
what what
B.
what that
C.
that that
D.
that what
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