The vessel that delivers nutrient-rich blood from the GI tract to the liver is B. Hepatic portal vein.
The thoracic duct joins the venous circulation at A. Junction of the left subclavian and left internal jugular veins.
Nerves that innervate the overlying skin and deep muscles of the back, as well as innervating the synovial joints between vertebrae are C. Anterior (ventral) ramus spinal nerves.
The cranial nerve that has extensive branches throughout the thorax and abdomen and provides parasympathetic fibers to the heart and GI tract is C. Vagus nerve (CN X).
Vessels in the neck are contained within B. Carotid sheath.
The bone of the skull that is NOT joined with any other bone through a suture is C. Mandible.
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![num_users = max(user_ids) + 1
num_items = max(item_ids) + 1
# 定义模型结构...
output = Dense(num_items, activation='softmax')(dense2)
model = Model(inputs=[user_input, item_input], outputs=output)
model...](https://linuxcpp.0voice.com/zb_users/upload/2023/05/202305162234068218239.png)
