老窑水的一般特点是什么？

Would you like _____ your mother cook supper? [ ]

A. helping

B. to help

C. help

D. helping

Directions:This section consists of three groups of pairs listed in two columns, A and B. You are to match the one marked 1), 2), 3),4) or 5) in Column A with the one marked a, b, c, d or e in Column B. One point is given to each pair you match.
1) ______ language acquisition device (LAD)
2) ______ stimulus and response
3) ______ the discourse theory
4) ______ acquisition and learning
5) ______ the input hypothesis
a) The former refers to the subconscious process leading to the development of "competence"; the latter refers to conscious study and knowledge of grammatical rules.
h) A sort of mechanism or device which contains the capacity to acquire one’ s first language.
c) It assumes that humans acquire language in only one way--by understanding messages, or by receiving "comprehensible input".
d) It believes there is little difference between the first language acquisition process and the process of second language acquisition--only through communication discourses.
e) The former serves to elicit behaviour; the latter is triggered by the former.

2009年甲公司与乙公司签订一份购买1000台A型微波炉的合同，约定由乙公司3月10日前办理托运手续，货到付款。
乙公司如期办理了托运手续，但装货时多装了50台B型微波炉。
甲公司于3月13日与丙公司签订合同，将处于运输途中的前述合同项下的1000台A型微波炉转卖给丙公司，约定货物质量检验期为货到后10天内。
3月15日，上述货物在运输途中突遇山洪暴发，致使100台A型微波炉受损报废。
顾客张三从丙公司处购买了一台B型微波炉，在正常使用过程中微波炉发生爆炸，致张三右臂受伤，花去医药费1200元。
问题：

如乙公司在办理完托运手续后即请求甲公司付款，甲公司应否付款为什么

投资建设项目内部控制主要由（）和监督组成。

A．风险活动

B．控制环境

C．风险管理

D．控制活动

E．信息与沟通

银汞合金调制中受潮可导致

A．强度下降
B．蠕变中下降
C．体积收缩
D．产生延缓膨胀
E．聚合加快