图示一作用于三角形板上的平面汇交力系，若F1、F2、F3各力的大小都不等于零，则此力系应：（）

[单选题]Lucky is the man who has no "skeleton in his closet". When a man has done something in his life that he is ashamed of, that he wants to hide, he is said to have a "skeleton in his closet". Some people may have more than one skeleton. As we have noted many times, it is hard to find out how these expressions begin. Sometimes, we get some hard facts. But more often we have to depend on guesswork. And that is true of this phrase, which came from England. Before 1932, English law did not permit a doctor to cut open a dead human body for scientific examination, unless it was the corpse (尸体) of an executed (处决) criminal. But when it became legal, more and more doctors demanded skeletons for a more scientific study of medicine. It was helping in the advance of modern medicine. The demand had become so strong that men began to rob tombs and sell skeletons to doctors at high prices. We are told that a doctor would usually buy just one skeleton for scientific study. It became very important in his work. But he had to keep it hidden because most people objected to keeping such a thing. As a rule, the doctor would keep his skeleton in some dark corner where it could not be seen, or hide it in a closet. After a time, people began to suspect (怀疑) every doctor of hiding a skeleton in the closet. From this suspicion, the phrase "a skeleton in the closet" took on a broader, more general meaning to describe anything that a man wanted to keep others from discovering. It could be proof of a criminal act, or something much less serious. Well, that is one theory. One writer, however, believes that the phrase might have come from something that really happened. It is his guess that a hidden closet in some old English country home may have turned up a real skeleton, clear proof of some old family shame or crime. Well, one man’s guess is as good as another. But this sounds like a story by the great French novelist, Balzac. Baizac tells us of a man who suspected his wife of having a lover. The husband comes home by surprise. But she hears him and quickly hides her lover in the closet of her bedroom. He enters her room and asks her if she is hiding her lover. He says he will not open the door to the closet if she promises him there is no one there; He will believe her. She answers firmly that she is not hiding anyone in the closet. The husband then begins to build a solid brick wall against the closet. His wife watches, knowing that her lover will never come out alive. But she will not change her story and admit her guilt.Which of the following is right according to the text

[判断题]低温中的微生物引起食品变质的特点是生长缓慢，代谢活动弱，以及变质过程较长

[单选题]儿童期单纯性肥胖症是成人期肥胖和心脑血管疾病、糖尿病、代谢综合症的（）因素。

[问答题]涉外警务行政处罚有什么样的特点？

[多选题]太平天国农民战争失败的主要原因是（　　）。

[多选题]计量活动中建立相关的制度时，必须遵循()。

[单选题]集装箱运输下的货运提单是以码头收据换取的，属于（　）。

[单选题]电加热片动态测试时，通电10到（）分钟，鼻闻是否有异味，并用红外线测温仪测试温升

[单选题]初产妇王某，产钳助产分娩一女婴，体重4100g，胎儿娩出后阴道持续出血50ml，色鲜红，检查产道发现出血口并缝合，鲜血停止，更换会阴垫。产后1小时又发现会阴垫约有出血100ml，马上测量血压80/50mmHg，面色苍白，出冷汗，子宫轮廓不清。护理上述病例，对下列哪项措施应提出质疑（）

[单选题]超声造影在心血管的用途，下列哪一项是错误的（）

2021年度福建省一级注册结构工程师成绩合格人员公示