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【单选题】
Which of the following is NOT one of the five basic questions that is addressed in the sample design phase?A.
"Should a sample be taken?"
B.
"What kind of sample should be taken?"
C.
"How much should the sample cost?"
D.
"How large should the sample be?"
E.
"What process should be followed?"
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【简答题】导管主要存在于大多数____植物木质部。管胞主要存在于____植物中。
【单选题】The following are parkour techniques EXCEPT______.
A.
reducing energy waste during the process
B.
making poses while moving at speed
C.
fighting against someone blocking the path
D.
preventing oneself from being injured or hurt